./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e58738f03c291d912b42eb65343509a99f93ac40ab295d49133dc12600f622b8 --- 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-e04fb08 [2022-11-16 15:52:54,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:52:54,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:52:54,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:52:54,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:52:54,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:52:54,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:52:54,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:52:54,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:52:54,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:52:54,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:52:54,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:52:54,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:52:54,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:52:54,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:52:54,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:52:54,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:52:54,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:52:54,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:52:54,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:52:54,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:52:54,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:52:54,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:52:54,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:52:54,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:52:54,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:52:54,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:52:54,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:52:54,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:52:54,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:52:54,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:52:54,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:52:54,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:52:54,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:52:54,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:52:54,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:52:54,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:52:54,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:52:54,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:52:54,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:52:54,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:52:54,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 15:52:54,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:52:54,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:52:54,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:52:54,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:52:54,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:52:54,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:52:54,760 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:52:54,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:52:54,760 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:52:54,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:52:54,761 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:52:54,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:52:54,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:52:54,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:52:54,762 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:52:54,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:52:54,769 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:52:54,769 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:52:54,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:52:54,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:52:54,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:52:54,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:52:54,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:52:54,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:52:54,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:52:54,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:52:54,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:52:54,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:52:54,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:52:54,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:52:54,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:52:54,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:52:54,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:54,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:52:54,775 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:52:54,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:52:54,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:52:54,776 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:52:54,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:52:54,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:52:54,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:52:54,777 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_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e58738f03c291d912b42eb65343509a99f93ac40ab295d49133dc12600f622b8 [2022-11-16 15:52:55,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:52:55,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:52:55,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:52:55,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:52:55,153 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:52:55,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2022-11-16 15:52:55,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/data/d68a0c5b3/8341f731ef324d0ab45f7ba039e29b57/FLAGcefc49fdd [2022-11-16 15:52:55,856 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:52:55,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2022-11-16 15:52:55,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/data/d68a0c5b3/8341f731ef324d0ab45f7ba039e29b57/FLAGcefc49fdd [2022-11-16 15:52:56,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/data/d68a0c5b3/8341f731ef324d0ab45f7ba039e29b57 [2022-11-16 15:52:56,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:52:56,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:52:56,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:56,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:52:56,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:52:56,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799db461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56, skipping insertion in model container [2022-11-16 15:52:56,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:52:56,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:52:56,560 WARN L229 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_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c[7390,7403] [2022-11-16 15:52:56,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:56,685 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:52:56,741 WARN L229 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_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c[7390,7403] [2022-11-16 15:52:56,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:56,806 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:52:56,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56 WrapperNode [2022-11-16 15:52:56,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:56,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:56,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:52:56,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:52:56,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,866 INFO L138 Inliner]: procedures = 55, calls = 156, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 245 [2022-11-16 15:52:56,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:56,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:52:56,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:52:56,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:52:56,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,924 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:52:56,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:52:56,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:52:56,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:52:56,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (1/1) ... [2022-11-16 15:52:56,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:56,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:56,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:52:56,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:52:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:52:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-16 15:52:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-16 15:52:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 15:52:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 15:52:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-16 15:52:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-16 15:52:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 15:52:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 15:52:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-16 15:52:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-16 15:52:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-16 15:52:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-16 15:52:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-16 15:52:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-16 15:52:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:52:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-16 15:52:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-16 15:52:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:52:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:52:57,136 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:52:57,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:52:57,538 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:52:57,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:52:57,659 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 15:52:57,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:57 BoogieIcfgContainer [2022-11-16 15:52:57,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:52:57,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:52:57,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:52:57,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:52:57,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:52:56" (1/3) ... [2022-11-16 15:52:57,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7241af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:57, skipping insertion in model container [2022-11-16 15:52:57,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:56" (2/3) ... [2022-11-16 15:52:57,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7241af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:57, skipping insertion in model container [2022-11-16 15:52:57,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:57" (3/3) ... [2022-11-16 15:52:57,677 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2022-11-16 15:52:57,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:52:57,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:52:57,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:52:57,759 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=FINITE_AUTOMATA, 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;@11d517ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:52:57,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:52:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 50 states have internal predecessors, (59), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 15:52:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 15:52:57,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:57,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:57,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash -813658692, now seen corresponding path program 1 times [2022-11-16 15:52:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:57,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027678448] [2022-11-16 15:52:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:57,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:57,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027678448] [2022-11-16 15:52:57,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027678448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:57,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:57,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:52:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190550490] [2022-11-16 15:52:57,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:58,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 15:52:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 15:52:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 15:52:58,035 INFO L87 Difference]: Start difference. First operand has 65 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 50 states have internal predecessors, (59), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:58,111 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2022-11-16 15:52:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 15:52:58,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-16 15:52:58,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:58,124 INFO L225 Difference]: With dead ends: 128 [2022-11-16 15:52:58,124 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 15:52:58,133 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 [2022-11-16 15:52:58,137 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:58,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:52:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 15:52:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 15:52:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 46 states have internal predecessors, (51), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 15:52:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2022-11-16 15:52:58,202 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 16 [2022-11-16 15:52:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:58,203 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2022-11-16 15:52:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2022-11-16 15:52:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 15:52:58,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:58,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:58,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:52:58,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash 19045832, now seen corresponding path program 1 times [2022-11-16 15:52:58,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:58,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719509091] [2022-11-16 15:52:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:58,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:58,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719509091] [2022-11-16 15:52:58,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719509091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:58,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:58,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:52:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224838863] [2022-11-16 15:52:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:58,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:52:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:58,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:52:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:52:58,373 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:58,418 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2022-11-16 15:52:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:52:58,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-16 15:52:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:58,420 INFO L225 Difference]: With dead ends: 92 [2022-11-16 15:52:58,420 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 15:52:58,421 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 [2022-11-16 15:52:58,423 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:58,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 88 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:52:58,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 15:52:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 15:52:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 41 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 15:52:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2022-11-16 15:52:58,432 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 17 [2022-11-16 15:52:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2022-11-16 15:52:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2022-11-16 15:52:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 15:52:58,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:58,434 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] [2022-11-16 15:52:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:52:58,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:58,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash 298454383, now seen corresponding path program 1 times [2022-11-16 15:52:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:58,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447801812] [2022-11-16 15:52:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:58,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:58,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447801812] [2022-11-16 15:52:58,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447801812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:58,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:58,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:52:58,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333352894] [2022-11-16 15:52:58,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:58,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:52:58,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:58,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:52:58,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:52:58,586 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:58,664 INFO L93 Difference]: Finished difference Result 152 states and 198 transitions. [2022-11-16 15:52:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:52:58,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-16 15:52:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:58,666 INFO L225 Difference]: With dead ends: 152 [2022-11-16 15:52:58,666 INFO L226 Difference]: Without dead ends: 102 [2022-11-16 15:52:58,667 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 [2022-11-16 15:52:58,668 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 61 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:58,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 119 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:52:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-16 15:52:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2022-11-16 15:52:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 77 states have internal predecessors, (85), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (22), 15 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 15:52:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2022-11-16 15:52:58,690 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 20 [2022-11-16 15:52:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:58,691 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2022-11-16 15:52:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2022-11-16 15:52:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 15:52:58,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:58,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 15:52:58,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash 830319332, now seen corresponding path program 1 times [2022-11-16 15:52:58,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:58,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366524608] [2022-11-16 15:52:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:58,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:58,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366524608] [2022-11-16 15:52:58,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366524608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:58,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:58,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 15:52:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913251748] [2022-11-16 15:52:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 15:52:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 15:52:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:52:58,849 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:59,104 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2022-11-16 15:52:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:52:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-16 15:52:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:59,108 INFO L225 Difference]: With dead ends: 291 [2022-11-16 15:52:59,108 INFO L226 Difference]: Without dead ends: 194 [2022-11-16 15:52:59,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 15:52:59,110 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 45 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:59,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 268 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 15:52:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-16 15:52:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 186. [2022-11-16 15:52:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 117 states have (on average 1.358974358974359) internal successors, (159), 144 states have internal predecessors, (159), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 28 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-16 15:52:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 243 transitions. [2022-11-16 15:52:59,144 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 243 transitions. Word has length 23 [2022-11-16 15:52:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:59,144 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 243 transitions. [2022-11-16 15:52:59,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 15:52:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 243 transitions. [2022-11-16 15:52:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 15:52:59,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:59,147 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] [2022-11-16 15:52:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 15:52:59,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 3642147, now seen corresponding path program 1 times [2022-11-16 15:52:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:59,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774829793] [2022-11-16 15:52:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:59,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:59,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774829793] [2022-11-16 15:52:59,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774829793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:59,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:59,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:52:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569959050] [2022-11-16 15:52:59,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:59,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:52:59,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:59,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:52:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:52:59,386 INFO L87 Difference]: Start difference. First operand 186 states and 243 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:52:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:59,529 INFO L93 Difference]: Finished difference Result 510 states and 682 transitions. [2022-11-16 15:52:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:52:59,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-16 15:52:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:59,537 INFO L225 Difference]: With dead ends: 510 [2022-11-16 15:52:59,537 INFO L226 Difference]: Without dead ends: 326 [2022-11-16 15:52:59,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:52:59,541 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 35 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:59,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 164 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:52:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-16 15:52:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 316. [2022-11-16 15:52:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 211 states have (on average 1.2938388625592416) internal successors, (273), 236 states have internal predecessors, (273), 56 states have call successors, (56), 48 states have call predecessors, (56), 48 states have return successors, (72), 50 states have call predecessors, (72), 56 states have call successors, (72) [2022-11-16 15:52:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 401 transitions. [2022-11-16 15:52:59,596 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 401 transitions. Word has length 26 [2022-11-16 15:52:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:59,597 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 401 transitions. [2022-11-16 15:52:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:52:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 401 transitions. [2022-11-16 15:52:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 15:52:59,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:59,600 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] [2022-11-16 15:52:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 15:52:59,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash -574020843, now seen corresponding path program 1 times [2022-11-16 15:52:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:59,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008224881] [2022-11-16 15:52:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:59,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008224881] [2022-11-16 15:52:59,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008224881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:59,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:59,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 15:52:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388358714] [2022-11-16 15:52:59,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:59,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 15:52:59,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:59,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 15:52:59,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:52:59,959 INFO L87 Difference]: Start difference. First operand 316 states and 401 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 15:53:00,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:00,277 INFO L93 Difference]: Finished difference Result 938 states and 1195 transitions. [2022-11-16 15:53:00,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:53:00,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 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 31 [2022-11-16 15:53:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:00,287 INFO L225 Difference]: With dead ends: 938 [2022-11-16 15:53:00,287 INFO L226 Difference]: Without dead ends: 624 [2022-11-16 15:53:00,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 15:53:00,301 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 199 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:00,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 226 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 15:53:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-16 15:53:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 552. [2022-11-16 15:53:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 379 states have (on average 1.274406332453826) internal successors, (483), 410 states have internal predecessors, (483), 86 states have call successors, (86), 78 states have call predecessors, (86), 86 states have return successors, (110), 86 states have call predecessors, (110), 86 states have call successors, (110) [2022-11-16 15:53:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 679 transitions. [2022-11-16 15:53:00,427 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 679 transitions. Word has length 31 [2022-11-16 15:53:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:00,428 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 679 transitions. [2022-11-16 15:53:00,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 15:53:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 679 transitions. [2022-11-16 15:53:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 15:53:00,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:00,442 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] [2022-11-16 15:53:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 15:53:00,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1566297182, now seen corresponding path program 1 times [2022-11-16 15:53:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:00,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223654155] [2022-11-16 15:53:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:53:00,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 15:53:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:53:00,530 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 15:53:00,531 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 15:53:00,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 15:53:00,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 15:53:00,538 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:00,542 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:53:00,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:53:00 BoogieIcfgContainer [2022-11-16 15:53:00,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:53:00,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:53:00,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:53:00,577 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:53:00,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:57" (3/4) ... [2022-11-16 15:53:00,579 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 15:53:00,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 15:53:00,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:53:00,630 INFO L158 Benchmark]: Toolchain (without parser) took 4497.92ms. Allocated memory was 96.5MB in the beginning and 157.3MB in the end (delta: 60.8MB). Free memory was 53.3MB in the beginning and 119.2MB in the end (delta: -65.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:53:00,631 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:53:00,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 668.35ms. Allocated memory is still 96.5MB. Free memory was 53.1MB in the beginning and 62.7MB in the end (delta: -9.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 15:53:00,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.53ms. Allocated memory is still 96.5MB. Free memory was 62.7MB in the beginning and 60.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:53:00,632 INFO L158 Benchmark]: Boogie Preprocessor took 59.72ms. Allocated memory is still 96.5MB. Free memory was 60.3MB in the beginning and 58.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:53:00,632 INFO L158 Benchmark]: RCFGBuilder took 733.63ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 58.5MB in the beginning and 94.0MB in the end (delta: -35.6MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-11-16 15:53:00,632 INFO L158 Benchmark]: TraceAbstraction took 2911.54ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 93.4MB in the beginning and 123.4MB in the end (delta: -30.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2022-11-16 15:53:00,633 INFO L158 Benchmark]: Witness Printer took 52.99ms. Allocated memory is still 157.3MB. Free memory was 123.4MB in the beginning and 119.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 15:53:00,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 668.35ms. Allocated memory is still 96.5MB. Free memory was 53.1MB in the beginning and 62.7MB in the end (delta: -9.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.53ms. Allocated memory is still 96.5MB. Free memory was 62.7MB in the beginning and 60.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.72ms. Allocated memory is still 96.5MB. Free memory was 60.3MB in the beginning and 58.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 733.63ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 58.5MB in the beginning and 94.0MB in the end (delta: -35.6MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2911.54ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 93.4MB in the beginning and 123.4MB in the end (delta: -30.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 52.99ms. Allocated memory is still 157.3MB. Free memory was 123.4MB in the beginning and 119.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 500]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L674] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L873] int methaneLevelCritical = 0; [L61] int pumpRunning = 0; [L872] int waterLevel = 1; [L62] int systemActive = 1; [L362] int cleanupTimeShifts = 4; [L438] int retValue_acc ; [L439] int tmp ; [L443] FCALL select_helpers() [L444] FCALL select_features() [L445] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L445] RET, EXPR valid_product() [L445] tmp = valid_product() [L447] COND TRUE \read(tmp) [L449] FCALL setup() [L450] CALL runTest() [L429] CALL test() [L267] int splverifierCounter ; [L268] int tmp ; [L269] int tmp___0 ; [L270] int tmp___1 ; [L271] int tmp___2 ; [L274] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L276] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L278] COND TRUE splverifierCounter < 4 [L284] tmp = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L288] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] COND TRUE waterLevel < 2 [L891] waterLevel = waterLevel + 1 [L288] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L294] tmp___0 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L298] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] COND FALSE !(\read(methaneLevelCritical)) [L905] methaneLevelCritical = 1 [L298] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L304] tmp___2 = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp___2) [L308] CALL startSystem() [L258] systemActive = 1 [L308] RET startSystem() [L323] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L69] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L76] COND TRUE \read(systemActive) [L78] CALL processEnvironment() [L124] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L142] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L98] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L101] COND TRUE ! pumpRunning [L103] CALL, EXPR isHighWaterLevel() [L221] int retValue_acc ; [L222] int tmp ; [L223] int tmp___0 ; [L227] CALL, EXPR isHighWaterSensorDry() [L952] int retValue_acc ; [L955] COND FALSE !(waterLevel < 2) [L959] retValue_acc = 0 [L960] return (retValue_acc); [L227] RET, EXPR isHighWaterSensorDry() [L227] tmp = isHighWaterSensorDry() [L229] COND FALSE !(\read(tmp)) [L232] tmp___0 = 1 [L234] retValue_acc = tmp___0 [L235] return (retValue_acc); [L103] RET, EXPR isHighWaterLevel() [L103] tmp = isHighWaterLevel() [L105] COND TRUE \read(tmp) [L107] CALL activatePump() [L152] pumpRunning = 1 [L107] RET activatePump() [L142] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L78] RET processEnvironment() [L84] CALL __utac_acc__Specification1_spec__1() [L337] int tmp ; [L338] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L342] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); [L342] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L342] tmp = isMethaneLevelCritical() [L344] COND TRUE \read(tmp) [L346] CALL, EXPR isPumpRunning() [L176] int retValue_acc ; [L179] retValue_acc = pumpRunning [L180] return (retValue_acc); [L346] RET, EXPR isPumpRunning() [L346] tmp___0 = isPumpRunning() [L348] COND TRUE \read(tmp___0) [L350] CALL __automaton_fail() [L500] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 362 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354 mSDsluCounter, 931 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 530 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 395 IncrementalHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 401 mSDtfsCounter, 395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=552occurred in iteration=6, InterpolantAutomatonStates: 29, 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, 6 MinimizatonAttempts, 93 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 15:53:00,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c57029e-8d37-42a9-b575-0a2c4b1ebce5/bin/utaipan-Xvt2sAort0/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