./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ --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 ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:07:16,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:07:16,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:07:16,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:07:16,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:07:16,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:07:16,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:07:16,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:07:16,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:07:16,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:07:16,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:07:16,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:07:16,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:07:16,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:07:16,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:07:16,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:07:16,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:07:16,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:07:16,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:07:16,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:07:16,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:07:16,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:07:16,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:07:16,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:07:16,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:07:16,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:07:16,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:07:16,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:07:16,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:07:16,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:07:16,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:07:16,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:07:16,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:07:16,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:07:16,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:07:16,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:07:16,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:07:16,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:07:16,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:07:16,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:07:16,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:07:16,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:07:16,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:07:16,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:07:16,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:07:16,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:07:16,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:07:16,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:07:16,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:07:16,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:07:16,782 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:07:16,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:07:16,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:07:16,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:07:16,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:07:16,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:07:16,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:07:16,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:07:16,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:07:16,785 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:07:16,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:07:16,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:07:16,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:07:16,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:07:16,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:07:16,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:07:16,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:16,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:07:16,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:07:16,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:07:16,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:07:16,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:07:16,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:07:16,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:07:16,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:07:16,789 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_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d [2022-10-17 11:07:17,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:07:17,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:07:17,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:07:17,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:07:17,139 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:07:17,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2022-10-17 11:07:17,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/data/2fbf70d1a/37fe673a62ec4e4bb26f8221795b4c36/FLAGfae3afcef [2022-10-17 11:07:17,765 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:07:17,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2022-10-17 11:07:17,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/data/2fbf70d1a/37fe673a62ec4e4bb26f8221795b4c36/FLAGfae3afcef [2022-10-17 11:07:18,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/data/2fbf70d1a/37fe673a62ec4e4bb26f8221795b4c36 [2022-10-17 11:07:18,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:07:18,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:07:18,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:18,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:07:18,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:07:18,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773c52aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18, skipping insertion in model container [2022-10-17 11:07:18,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:07:18,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:07:18,356 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_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2022-10-17 11:07:18,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:18,440 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:07:18,468 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_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2022-10-17 11:07:18,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:18,570 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:07:18,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18 WrapperNode [2022-10-17 11:07:18,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:18,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:18,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:07:18,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:07:18,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,638 INFO L138 Inliner]: procedures = 54, calls = 155, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 259 [2022-10-17 11:07:18,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:18,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:07:18,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:07:18,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:07:18,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:07:18,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:07:18,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:07:18,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:07:18,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (1/1) ... [2022-10-17 11:07:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:18,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:07:18,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:07:18,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:07:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:07:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-10-17 11:07:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-10-17 11:07:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 11:07:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 11:07:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 11:07:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 11:07:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-10-17 11:07:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-10-17 11:07:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-10-17 11:07:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-10-17 11:07:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-10-17 11:07:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-10-17 11:07:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:07:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-10-17 11:07:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-10-17 11:07:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:07:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:07:18,886 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:07:18,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:07:19,372 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:07:19,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:07:19,389 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 11:07:19,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:19 BoogieIcfgContainer [2022-10-17 11:07:19,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:07:19,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:07:19,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:07:19,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:07:19,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:07:18" (1/3) ... [2022-10-17 11:07:19,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348c8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:19, skipping insertion in model container [2022-10-17 11:07:19,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:18" (2/3) ... [2022-10-17 11:07:19,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348c8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:19, skipping insertion in model container [2022-10-17 11:07:19,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:19" (3/3) ... [2022-10-17 11:07:19,403 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2022-10-17 11:07:19,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:07:19,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:07:19,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:07:19,512 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5aceb479, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:07:19,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:07:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 75 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-17 11:07:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 11:07:19,541 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:19,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:19,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 657665153, now seen corresponding path program 1 times [2022-10-17 11:07:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355611523] [2022-10-17 11:07:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:19,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355611523] [2022-10-17 11:07:19,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355611523] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:19,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:19,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:07:19,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083868412] [2022-10-17 11:07:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:19,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:07:19,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:07:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:07:19,848 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 75 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:19,884 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2022-10-17 11:07:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:07:19,887 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 [2022-10-17 11:07:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:19,897 INFO L225 Difference]: With dead ends: 168 [2022-10-17 11:07:19,897 INFO L226 Difference]: Without dead ends: 79 [2022-10-17 11:07:19,901 INFO L412 NwaCegarLoop]: 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 [2022-10-17 11:07:19,905 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:19,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-17 11:07:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-10-17 11:07:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 67 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 11:07:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-10-17 11:07:19,955 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2022-10-17 11:07:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:19,955 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-10-17 11:07:19,956 INFO L496 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) [2022-10-17 11:07:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-10-17 11:07:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 11:07:19,958 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:19,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:19,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:07:19,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -635016862, now seen corresponding path program 1 times [2022-10-17 11:07:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:19,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787415152] [2022-10-17 11:07:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:20,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:20,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787415152] [2022-10-17 11:07:20,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787415152] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:20,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:20,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254759614] [2022-10-17 11:07:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:20,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:20,108 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:20,131 INFO L93 Difference]: Finished difference Result 124 states and 160 transitions. [2022-10-17 11:07:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:20,132 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 [2022-10-17 11:07:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:20,133 INFO L225 Difference]: With dead ends: 124 [2022-10-17 11:07:20,134 INFO L226 Difference]: Without dead ends: 70 [2022-10-17 11:07:20,135 INFO L412 NwaCegarLoop]: 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 [2022-10-17 11:07:20,136 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 12 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:20,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-17 11:07:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-10-17 11:07:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 61 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-17 11:07:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-10-17 11:07:20,152 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2022-10-17 11:07:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:20,152 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-10-17 11:07:20,153 INFO L496 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) [2022-10-17 11:07:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-10-17 11:07:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 11:07:20,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:20,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:20,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:07:20,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 393763767, now seen corresponding path program 1 times [2022-10-17 11:07:20,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:20,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807013632] [2022-10-17 11:07:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:20,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807013632] [2022-10-17 11:07:20,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807013632] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:20,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:20,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:07:20,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579924068] [2022-10-17 11:07:20,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:20,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:20,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:20,374 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:20,398 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2022-10-17 11:07:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-17 11:07:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:20,403 INFO L225 Difference]: With dead ends: 133 [2022-10-17 11:07:20,404 INFO L226 Difference]: Without dead ends: 70 [2022-10-17 11:07:20,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:20,414 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:20,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-17 11:07:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-10-17 11:07:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 61 states have internal predecessors, (71), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-17 11:07:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2022-10-17 11:07:20,435 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 24 [2022-10-17 11:07:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:20,436 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2022-10-17 11:07:20,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2022-10-17 11:07:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 11:07:20,456 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:20,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:20,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:07:20,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1897865398, now seen corresponding path program 1 times [2022-10-17 11:07:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:20,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818123013] [2022-10-17 11:07:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 11:07:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:20,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:07:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:20,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:20,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818123013] [2022-10-17 11:07:20,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818123013] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:20,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:20,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:20,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800321404] [2022-10-17 11:07:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:20,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:20,712 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 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) [2022-10-17 11:07:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:20,912 INFO L93 Difference]: Finished difference Result 200 states and 253 transitions. [2022-10-17 11:07:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:07:20,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 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 34 [2022-10-17 11:07:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:20,914 INFO L225 Difference]: With dead ends: 200 [2022-10-17 11:07:20,914 INFO L226 Difference]: Without dead ends: 137 [2022-10-17 11:07:20,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:07:20,917 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 161 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:20,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 247 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-17 11:07:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2022-10-17 11:07:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 111 states have internal predecessors, (130), 12 states have call successors, (12), 12 states have call predecessors, (12), 15 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2022-10-17 11:07:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2022-10-17 11:07:20,940 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 34 [2022-10-17 11:07:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:20,941 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2022-10-17 11:07:20,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 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) [2022-10-17 11:07:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2022-10-17 11:07:20,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-17 11:07:20,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:20,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:20,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:07:20,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1288107246, now seen corresponding path program 1 times [2022-10-17 11:07:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:20,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269935877] [2022-10-17 11:07:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:20,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 11:07:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 11:07:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:21,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269935877] [2022-10-17 11:07:21,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269935877] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:21,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:21,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:07:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752396769] [2022-10-17 11:07:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:21,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:07:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:07:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:07:21,119 INFO L87 Difference]: Start difference. First operand 131 states and 159 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, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 11:07:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:21,351 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2022-10-17 11:07:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:07:21,351 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, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-10-17 11:07:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:21,363 INFO L225 Difference]: With dead ends: 334 [2022-10-17 11:07:21,363 INFO L226 Difference]: Without dead ends: 210 [2022-10-17 11:07:21,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:07:21,367 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:21,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 278 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-10-17 11:07:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2022-10-17 11:07:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 163 states have (on average 1.2515337423312884) internal successors, (204), 174 states have internal predecessors, (204), 21 states have call successors, (21), 21 states have call predecessors, (21), 23 states have return successors, (31), 21 states have call predecessors, (31), 21 states have call successors, (31) [2022-10-17 11:07:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 256 transitions. [2022-10-17 11:07:21,415 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 256 transitions. Word has length 40 [2022-10-17 11:07:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:21,416 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 256 transitions. [2022-10-17 11:07:21,416 INFO L496 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, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 11:07:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 256 transitions. [2022-10-17 11:07:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 11:07:21,418 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:21,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:21,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:07:21,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1416737492, now seen corresponding path program 1 times [2022-10-17 11:07:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:21,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488420132] [2022-10-17 11:07:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:21,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:07:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 11:07:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 11:07:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:21,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:21,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488420132] [2022-10-17 11:07:21,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488420132] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:21,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:21,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:07:21,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27917895] [2022-10-17 11:07:21,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:21,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:07:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:07:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:21,619 INFO L87 Difference]: Start difference. First operand 208 states and 256 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:07:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:22,020 INFO L93 Difference]: Finished difference Result 262 states and 318 transitions. [2022-10-17 11:07:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 11:07:22,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-10-17 11:07:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:22,026 INFO L225 Difference]: With dead ends: 262 [2022-10-17 11:07:22,026 INFO L226 Difference]: Without dead ends: 260 [2022-10-17 11:07:22,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-10-17 11:07:22,030 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 194 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:22,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 371 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:07:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-10-17 11:07:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 238. [2022-10-17 11:07:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 202 states have internal predecessors, (230), 23 states have call successors, (23), 21 states have call predecessors, (23), 27 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2022-10-17 11:07:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2022-10-17 11:07:22,086 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 44 [2022-10-17 11:07:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:22,088 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2022-10-17 11:07:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:07:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2022-10-17 11:07:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 11:07:22,094 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:22,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:07:22,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash -401607229, now seen corresponding path program 1 times [2022-10-17 11:07:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:22,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617076206] [2022-10-17 11:07:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:07:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 11:07:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 11:07:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:22,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617076206] [2022-10-17 11:07:22,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617076206] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:22,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:22,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:07:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805183931] [2022-10-17 11:07:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:22,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:07:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:07:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:22,267 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 11:07:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:22,520 INFO L93 Difference]: Finished difference Result 489 states and 607 transitions. [2022-10-17 11:07:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:07:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-10-17 11:07:22,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:22,525 INFO L225 Difference]: With dead ends: 489 [2022-10-17 11:07:22,526 INFO L226 Difference]: Without dead ends: 258 [2022-10-17 11:07:22,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:07:22,530 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 135 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:22,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 310 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:07:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-10-17 11:07:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 244. [2022-10-17 11:07:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 193 states have (on average 1.2227979274611398) internal successors, (236), 208 states have internal predecessors, (236), 23 states have call successors, (23), 21 states have call predecessors, (23), 27 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2022-10-17 11:07:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 296 transitions. [2022-10-17 11:07:22,569 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 296 transitions. Word has length 50 [2022-10-17 11:07:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:22,569 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 296 transitions. [2022-10-17 11:07:22,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 11:07:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 296 transitions. [2022-10-17 11:07:22,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 11:07:22,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:22,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:22,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:07:22,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash -182752511, now seen corresponding path program 1 times [2022-10-17 11:07:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:22,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693708397] [2022-10-17 11:07:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:07:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 11:07:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 11:07:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:22,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693708397] [2022-10-17 11:07:22,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693708397] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:22,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:22,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:07:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493621639] [2022-10-17 11:07:22,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:22,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:07:22,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:07:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:22,811 INFO L87 Difference]: Start difference. First operand 244 states and 296 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 11:07:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:23,045 INFO L93 Difference]: Finished difference Result 456 states and 558 transitions. [2022-10-17 11:07:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:07:23,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2022-10-17 11:07:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:23,049 INFO L225 Difference]: With dead ends: 456 [2022-10-17 11:07:23,049 INFO L226 Difference]: Without dead ends: 219 [2022-10-17 11:07:23,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:07:23,051 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 244 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:23,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 232 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-10-17 11:07:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2022-10-17 11:07:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 140 states have (on average 1.2142857142857142) internal successors, (170), 150 states have internal predecessors, (170), 17 states have call successors, (17), 17 states have call predecessors, (17), 20 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-10-17 11:07:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 210 transitions. [2022-10-17 11:07:23,076 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 210 transitions. Word has length 50 [2022-10-17 11:07:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:23,077 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 210 transitions. [2022-10-17 11:07:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 11:07:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 210 transitions. [2022-10-17 11:07:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 11:07:23,079 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:23,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:07:23,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -316766017, now seen corresponding path program 1 times [2022-10-17 11:07:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325769868] [2022-10-17 11:07:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:07:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 11:07:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 11:07:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:23,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325769868] [2022-10-17 11:07:23,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325769868] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:23,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:23,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:07:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232500287] [2022-10-17 11:07:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:07:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:07:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:23,245 INFO L87 Difference]: Start difference. First operand 178 states and 210 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 11:07:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:23,567 INFO L93 Difference]: Finished difference Result 393 states and 495 transitions. [2022-10-17 11:07:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:07:23,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-10-17 11:07:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:23,571 INFO L225 Difference]: With dead ends: 393 [2022-10-17 11:07:23,571 INFO L226 Difference]: Without dead ends: 262 [2022-10-17 11:07:23,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-10-17 11:07:23,575 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 186 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:23,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 406 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:07:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-10-17 11:07:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2022-10-17 11:07:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 204 states have (on average 1.2107843137254901) internal successors, (247), 218 states have internal predecessors, (247), 27 states have call successors, (27), 25 states have call predecessors, (27), 28 states have return successors, (44), 27 states have call predecessors, (44), 27 states have call successors, (44) [2022-10-17 11:07:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 318 transitions. [2022-10-17 11:07:23,610 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 318 transitions. Word has length 50 [2022-10-17 11:07:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:23,611 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 318 transitions. [2022-10-17 11:07:23,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 11:07:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 318 transitions. [2022-10-17 11:07:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 11:07:23,613 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:23,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:23,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:07:23,614 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1655738174, now seen corresponding path program 1 times [2022-10-17 11:07:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247768357] [2022-10-17 11:07:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:07:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 11:07:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:07:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 11:07:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 11:07:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 11:07:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:07:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 11:07:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:23,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247768357] [2022-10-17 11:07:23,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247768357] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:07:23,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538263158] [2022-10-17 11:07:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:23,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:07:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:07:23,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:07:23,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:07:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 11:07:24,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:24,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:07:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 11:07:24,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538263158] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:07:24,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:07:24,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-10-17 11:07:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157308021] [2022-10-17 11:07:24,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:07:24,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 11:07:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 11:07:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:07:24,371 INFO L87 Difference]: Start difference. First operand 260 states and 318 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 11:07:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:24,971 INFO L93 Difference]: Finished difference Result 599 states and 768 transitions. [2022-10-17 11:07:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-17 11:07:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2022-10-17 11:07:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:24,977 INFO L225 Difference]: With dead ends: 599 [2022-10-17 11:07:24,977 INFO L226 Difference]: Without dead ends: 386 [2022-10-17 11:07:24,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 182 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-10-17 11:07:24,980 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 377 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:24,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 470 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 11:07:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-10-17 11:07:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 355. [2022-10-17 11:07:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 276 states have (on average 1.210144927536232) internal successors, (334), 295 states have internal predecessors, (334), 38 states have call successors, (38), 36 states have call predecessors, (38), 40 states have return successors, (65), 36 states have call predecessors, (65), 38 states have call successors, (65) [2022-10-17 11:07:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 437 transitions. [2022-10-17 11:07:25,027 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 437 transitions. Word has length 86 [2022-10-17 11:07:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:25,028 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 437 transitions. [2022-10-17 11:07:25,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 11:07:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 437 transitions. [2022-10-17 11:07:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 11:07:25,036 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:25,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:25,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:25,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 11:07:25,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:25,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1210307397, now seen corresponding path program 2 times [2022-10-17 11:07:25,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:25,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978136686] [2022-10-17 11:07:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:07:25,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:07:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:07:25,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:07:25,361 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:07:25,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 11:07:25,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 11:07:25,367 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:25,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:07:25,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:07:25 BoogieIcfgContainer [2022-10-17 11:07:25,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:07:25,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:07:25,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:07:25,514 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:07:25,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:19" (3/4) ... [2022-10-17 11:07:25,516 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 11:07:25,636 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 11:07:25,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:07:25,637 INFO L158 Benchmark]: Toolchain (without parser) took 7607.03ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 53.9MB in the beginning and 90.4MB in the end (delta: -36.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,638 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:07:25,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.42ms. Allocated memory is still 94.4MB. Free memory was 53.7MB in the beginning and 62.5MB in the end (delta: -8.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.28ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 59.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,639 INFO L158 Benchmark]: Boogie Preprocessor took 63.07ms. Allocated memory is still 94.4MB. Free memory was 59.9MB in the beginning and 58.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,639 INFO L158 Benchmark]: RCFGBuilder took 689.33ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 39.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,640 INFO L158 Benchmark]: TraceAbstraction took 6118.86ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 38.9MB in the beginning and 98.9MB in the end (delta: -60.0MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,640 INFO L158 Benchmark]: Witness Printer took 123.49ms. Allocated memory is still 136.3MB. Free memory was 98.9MB in the beginning and 90.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 11:07:25,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.42ms. Allocated memory is still 94.4MB. Free memory was 53.7MB in the beginning and 62.5MB in the end (delta: -8.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.28ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 59.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.07ms. Allocated memory is still 94.4MB. Free memory was 59.9MB in the beginning and 58.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 689.33ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 39.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6118.86ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 38.9MB in the beginning and 98.9MB in the end (delta: -60.0MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. * Witness Printer took 123.49ms. Allocated memory is still 136.3MB. Free memory was 98.9MB in the beginning and 90.4MB in the end (delta: 8.5MB). 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: 327]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L127] int pumpRunning = 0; [L128] int systemActive = 1; [L501] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L801] int retValue_acc ; [L802] int tmp ; [L806] FCALL select_helpers() [L807] FCALL select_features() [L808] CALL, EXPR valid_product() [L944] int retValue_acc ; [L947] retValue_acc = 1 [L948] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L808] RET, EXPR valid_product() [L808] tmp = valid_product() [L810] COND TRUE \read(tmp) [L812] FCALL setup() [L813] CALL runTest() [L792] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L76] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] 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] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L135] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L208] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND TRUE ! pumpRunning [L169] CALL, EXPR isHighWaterLevel() [L304] int retValue_acc ; [L305] int tmp ; [L306] int tmp___0 ; [L310] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] 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] [L310] RET, EXPR isHighWaterSensorDry() [L310] tmp = isHighWaterSensorDry() [L312] COND FALSE !(\read(tmp)) [L315] 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] [L317] retValue_acc = tmp___0 [L318] 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] [L169] RET, EXPR isHighWaterLevel() [L169] tmp = isHighWaterLevel() [L171] COND TRUE \read(tmp) [L173] CALL activatePump() [L223] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] 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] [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] 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] [L227] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] tmp = isMethaneAlarm() [L229] COND FALSE !(\read(tmp)) [L233] CALL activatePump__wrappee__highWaterSensor() [L218] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L233] RET activatePump__wrappee__highWaterSensor() [L173] RET activatePump() [L208] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] 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] [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] 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] [L150] RET __utac_acc__Specification4_spec__1() [L107] 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] [L64] 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] [L66] 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] [L72] tmp = __VERIFIER_nondet_int() [L74] 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] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] 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] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] 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] [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] 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] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L66] 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=1, waterLevel=1] [L72] tmp = __VERIFIER_nondet_int() [L74] 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=1] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] 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=1] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] 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] [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] 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] [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] 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] [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND TRUE tmp == 0 [L709] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] 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] [L709] RET, EXPR isPumpRunning() [L709] tmp___0 = isPumpRunning() [L711] COND TRUE \read(tmp___0) [L713] CALL __automaton_fail() [L327] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1540 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1516 mSDsluCounter, 2675 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1733 mSDsCounter, 404 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1528 IncrementalHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 404 mSolverCounterUnsat, 942 mSDtfsCounter, 1528 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 235 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=10, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 625 NumberOfCodeBlocks, 625 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 577 ConstructedInterpolants, 0 QuantifiedInterpolants, 1168 SizeOfPredicates, 4 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 49/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-10-17 11:07:25,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed9ccdf-a755-4f42-9ecb-424b5c6c1051/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE