./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V --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 2165aefdca75c2370f155996346c5c4ea8ed352d96946243b70bd7ef162ab29f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:32:55,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:32:55,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:32:55,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:32:55,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:32:55,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:32:55,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:32:55,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:32:55,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:32:55,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:32:55,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:32:55,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:32:55,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:32:55,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:32:55,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:32:55,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:32:55,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:32:55,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:32:55,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:32:55,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:32:55,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:32:55,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:32:55,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:32:55,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:32:55,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:32:55,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:32:55,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:32:55,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:32:55,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:32:55,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:32:55,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:32:55,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:32:55,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:32:55,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:32:55,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:32:55,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:32:55,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:32:55,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:32:55,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:32:55,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:32:55,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:32:55,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:32:55,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:32:55,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:32:55,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:32:55,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:32:55,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:32:55,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:32:55,920 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:32:55,921 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:32:55,921 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:32:55,921 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:32:55,922 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:32:55,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:32:55,923 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:32:55,923 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:32:55,923 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:32:55,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:32:55,924 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:32:55,924 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:32:55,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:32:55,925 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:32:55,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:32:55,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:32:55,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:32:55,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:32:55,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:32:55,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:32:55,928 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:32:55,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:32:55,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:32:55,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:32:55,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:32:55,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:32:55,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:32:55,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:32:55,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:32:55,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:32:55,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:32:55,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:32:55,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:32:55,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:32:55,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:32:55,931 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2165aefdca75c2370f155996346c5c4ea8ed352d96946243b70bd7ef162ab29f [2021-11-23 02:32:56,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:32:56,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:32:56,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:32:56,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:32:56,267 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:32:56,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c [2021-11-23 02:32:56,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/data/af3f4046d/9ad307d67b1140409d568e5bba494b15/FLAG7428ab6e5 [2021-11-23 02:32:56,880 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:32:56,883 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c [2021-11-23 02:32:56,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/data/af3f4046d/9ad307d67b1140409d568e5bba494b15/FLAG7428ab6e5 [2021-11-23 02:32:57,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/data/af3f4046d/9ad307d67b1140409d568e5bba494b15 [2021-11-23 02:32:57,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:32:57,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:32:57,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:32:57,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:32:57,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:32:57,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:57,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd4c9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57, skipping insertion in model container [2021-11-23 02:32:57,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:57,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:32:57,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:32:57,673 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_3953c3c4-2fd5-43f4-86f1-df5f695195b9/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c[8940,8953] [2021-11-23 02:32:57,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:32:57,776 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:32:57,842 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_3953c3c4-2fd5-43f4-86f1-df5f695195b9/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c[8940,8953] [2021-11-23 02:32:57,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:32:57,931 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:32:57,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57 WrapperNode [2021-11-23 02:32:57,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:32:57,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:32:57,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:32:57,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:32:57,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:57,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:57,999 INFO L137 Inliner]: procedures = 56, calls = 156, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 260 [2021-11-23 02:32:58,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:32:58,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:32:58,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:32:58,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:32:58,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:32:58,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:32:58,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:32:58,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:32:58,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (1/1) ... [2021-11-23 02:32:58,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:32:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:58,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:32:58,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:32:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:32:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 02:32:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 02:32:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:32:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:32:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:32:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:32:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:32:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:32:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 02:32:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 02:32:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 02:32:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 02:32:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:32:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 02:32:58,142 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 02:32:58,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:32:58,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:32:58,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:32:58,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:32:58,599 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:32:58,712 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:32:58,712 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:32:58,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:58 BoogieIcfgContainer [2021-11-23 02:32:58,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:32:58,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:32:58,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:32:58,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:32:58,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:32:57" (1/3) ... [2021-11-23 02:32:58,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b46c681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:32:58, skipping insertion in model container [2021-11-23 02:32:58,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:57" (2/3) ... [2021-11-23 02:32:58,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b46c681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:32:58, skipping insertion in model container [2021-11-23 02:32:58,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:58" (3/3) ... [2021-11-23 02:32:58,725 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2021-11-23 02:32:58,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:32:58,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:32:58,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:32:58,854 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:32:58,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:32:58,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:32:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:32:58,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:58,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:58,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash -828228736, now seen corresponding path program 1 times [2021-11-23 02:32:58,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:58,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018683770] [2021-11-23 02:32:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:58,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:59,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018683770] [2021-11-23 02:32:59,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018683770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:59,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:59,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:32:59,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480871633] [2021-11-23 02:32:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:59,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:32:59,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:32:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:32:59,177 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:59,240 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2021-11-23 02:32:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:32:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 12 [2021-11-23 02:32:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:59,252 INFO L225 Difference]: With dead ends: 116 [2021-11-23 02:32:59,252 INFO L226 Difference]: Without dead ends: 54 [2021-11-23 02:32:59,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:32:59,259 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:59,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:32:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-23 02:32:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-23 02:32:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:32:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2021-11-23 02:32:59,303 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2021-11-23 02:32:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:59,304 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2021-11-23 02:32:59,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2021-11-23 02:32:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:32:59,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:59,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:59,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:32:59,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1937508316, now seen corresponding path program 1 times [2021-11-23 02:32:59,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:59,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094721916] [2021-11-23 02:32:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:59,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:59,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094721916] [2021-11-23 02:32:59,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094721916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:59,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:59,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:59,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818892224] [2021-11-23 02:32:59,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:59,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:59,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:59,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:59,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:59,433 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:59,475 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2021-11-23 02:32:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2021-11-23 02:32:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:59,477 INFO L225 Difference]: With dead ends: 80 [2021-11-23 02:32:59,477 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 02:32:59,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:59,480 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:59,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:32:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 02:32:59,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-23 02:32:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 02:32:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2021-11-23 02:32:59,490 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2021-11-23 02:32:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2021-11-23 02:32:59,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2021-11-23 02:32:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:32:59,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:59,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:59,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:32:59,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 45018411, now seen corresponding path program 1 times [2021-11-23 02:32:59,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:59,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602867963] [2021-11-23 02:32:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:59,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:59,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602867963] [2021-11-23 02:32:59,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602867963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:59,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:59,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:59,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531941041] [2021-11-23 02:32:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:59,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:32:59,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:32:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:32:59,600 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:59,732 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2021-11-23 02:32:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:32:59,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 16 [2021-11-23 02:32:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:59,735 INFO L225 Difference]: With dead ends: 133 [2021-11-23 02:32:59,736 INFO L226 Difference]: Without dead ends: 89 [2021-11-23 02:32:59,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:32:59,739 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 74 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:59,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 126 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:32:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-23 02:32:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-11-23 02:32:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 59 states have internal predecessors, (67), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-23 02:32:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2021-11-23 02:32:59,789 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 16 [2021-11-23 02:32:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:59,790 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2021-11-23 02:32:59,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2021-11-23 02:32:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:32:59,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:59,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:59,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:32:59,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1029052617, now seen corresponding path program 1 times [2021-11-23 02:32:59,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:59,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801161006] [2021-11-23 02:32:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:59,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:59,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:59,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801161006] [2021-11-23 02:32:59,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801161006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:59,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:59,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:59,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513432006] [2021-11-23 02:32:59,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:59,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:32:59,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:32:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:32:59,886 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:59,963 INFO L93 Difference]: Finished difference Result 176 states and 240 transitions. [2021-11-23 02:32:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:32:59,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2021-11-23 02:32:59,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:59,966 INFO L225 Difference]: With dead ends: 176 [2021-11-23 02:32:59,966 INFO L226 Difference]: Without dead ends: 106 [2021-11-23 02:32:59,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:32:59,969 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:59,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 141 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:32:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-23 02:32:59,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2021-11-23 02:32:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.318840579710145) internal successors, (91), 79 states have internal predecessors, (91), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2021-11-23 02:32:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2021-11-23 02:32:59,989 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 19 [2021-11-23 02:32:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:59,989 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2021-11-23 02:32:59,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2021-11-23 02:32:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:32:59,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:59,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:59,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:32:59,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1293448696, now seen corresponding path program 1 times [2021-11-23 02:32:59,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:59,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153156018] [2021-11-23 02:32:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:59,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:33:00,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:00,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153156018] [2021-11-23 02:33:00,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153156018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:00,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:00,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:00,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628697942] [2021-11-23 02:33:00,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:00,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:00,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:00,056 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:33:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:00,117 INFO L93 Difference]: Finished difference Result 198 states and 254 transitions. [2021-11-23 02:33:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:00,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 27 [2021-11-23 02:33:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:00,121 INFO L225 Difference]: With dead ends: 198 [2021-11-23 02:33:00,127 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 02:33:00,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:00,132 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 26 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:00,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 107 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:33:00,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 02:33:00,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-23 02:33:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.26) internal successors, (63), 57 states have internal predecessors, (63), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2021-11-23 02:33:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2021-11-23 02:33:00,158 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 27 [2021-11-23 02:33:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:00,159 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2021-11-23 02:33:00,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:33:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2021-11-23 02:33:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:33:00,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:00,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:00,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:33:00,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:00,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:00,164 INFO L85 PathProgramCache]: Analyzing trace with hash 241097834, now seen corresponding path program 1 times [2021-11-23 02:33:00,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:00,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388406125] [2021-11-23 02:33:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:00,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:33:00,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:00,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388406125] [2021-11-23 02:33:00,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388406125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:00,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:00,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:33:00,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768614281] [2021-11-23 02:33:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:00,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:00,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:00,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:00,283 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:33:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:00,392 INFO L93 Difference]: Finished difference Result 209 states and 258 transitions. [2021-11-23 02:33:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:33:00,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 24 [2021-11-23 02:33:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:00,396 INFO L225 Difference]: With dead ends: 209 [2021-11-23 02:33:00,396 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 02:33:00,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:33:00,399 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 65 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:00,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 151 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:33:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 02:33:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 109. [2021-11-23 02:33:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 85 states have internal predecessors, (93), 15 states have call successors, (15), 15 states have call predecessors, (15), 17 states have return successors, (21), 15 states have call predecessors, (21), 15 states have call successors, (21) [2021-11-23 02:33:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2021-11-23 02:33:00,440 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 24 [2021-11-23 02:33:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:00,440 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2021-11-23 02:33:00,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:33:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2021-11-23 02:33:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:33:00,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:00,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:00,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:33:00,447 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1165699348, now seen corresponding path program 1 times [2021-11-23 02:33:00,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:00,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918311898] [2021-11-23 02:33:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:00,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:33:00,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:00,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918311898] [2021-11-23 02:33:00,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918311898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:00,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:00,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:33:00,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312783047] [2021-11-23 02:33:00,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:00,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:33:00,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:00,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:33:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:33:00,622 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:33:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:00,982 INFO L93 Difference]: Finished difference Result 276 states and 344 transitions. [2021-11-23 02:33:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:33:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-23 02:33:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:00,988 INFO L225 Difference]: With dead ends: 276 [2021-11-23 02:33:00,988 INFO L226 Difference]: Without dead ends: 205 [2021-11-23 02:33:00,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:33:00,992 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 157 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:00,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 277 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:33:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-23 02:33:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 182. [2021-11-23 02:33:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 143 states have internal predecessors, (156), 26 states have call successors, (26), 23 states have call predecessors, (26), 28 states have return successors, (37), 26 states have call predecessors, (37), 26 states have call successors, (37) [2021-11-23 02:33:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 219 transitions. [2021-11-23 02:33:01,035 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 219 transitions. Word has length 27 [2021-11-23 02:33:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:01,036 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 219 transitions. [2021-11-23 02:33:01,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:33:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 219 transitions. [2021-11-23 02:33:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:33:01,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:01,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:01,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:33:01,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:01,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1859269106, now seen corresponding path program 1 times [2021-11-23 02:33:01,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:01,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225438398] [2021-11-23 02:33:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:01,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:33:01,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:01,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225438398] [2021-11-23 02:33:01,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225438398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:01,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859977388] [2021-11-23 02:33:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:01,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:01,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:01,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:33:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:01,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:33:01,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:33:01,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:33:01,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859977388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:01,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:33:01,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-23 02:33:01,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227032423] [2021-11-23 02:33:01,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:01,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:01,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:33:01,479 INFO L87 Difference]: Start difference. First operand 182 states and 219 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 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) [2021-11-23 02:33:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:01,569 INFO L93 Difference]: Finished difference Result 265 states and 325 transitions. [2021-11-23 02:33:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:01,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 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 46 [2021-11-23 02:33:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:01,572 INFO L225 Difference]: With dead ends: 265 [2021-11-23 02:33:01,572 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 02:33:01,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:33:01,576 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:01,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:33:01,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 02:33:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-23 02:33:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 127 states have (on average 1.204724409448819) internal successors, (153), 142 states have internal predecessors, (153), 25 states have call successors, (25), 23 states have call predecessors, (25), 28 states have return successors, (33), 26 states have call predecessors, (33), 25 states have call successors, (33) [2021-11-23 02:33:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 211 transitions. [2021-11-23 02:33:01,606 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 211 transitions. Word has length 46 [2021-11-23 02:33:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:01,607 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 211 transitions. [2021-11-23 02:33:01,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 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) [2021-11-23 02:33:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 211 transitions. [2021-11-23 02:33:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 02:33:01,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:01,609 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:33:01,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:01,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:01,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -325444745, now seen corresponding path program 1 times [2021-11-23 02:33:01,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:01,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193889920] [2021-11-23 02:33:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:01,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:33:01,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193889920] [2021-11-23 02:33:01,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193889920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745768406] [2021-11-23 02:33:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:01,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:01,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:01,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:33:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:02,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:33:02,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:33:02,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:33:02,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745768406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:02,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:33:02,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-23 02:33:02,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302072566] [2021-11-23 02:33:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:02,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:33:02,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:33:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:33:02,426 INFO L87 Difference]: Start difference. First operand 181 states and 211 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:33:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:02,745 INFO L93 Difference]: Finished difference Result 361 states and 431 transitions. [2021-11-23 02:33:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:33:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2021-11-23 02:33:02,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:02,749 INFO L225 Difference]: With dead ends: 361 [2021-11-23 02:33:02,749 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 02:33:02,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:33:02,752 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 115 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:02,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 176 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:33:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 02:33:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 190. [2021-11-23 02:33:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 147 states have internal predecessors, (162), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (31), 25 states have call predecessors, (31), 26 states have call successors, (31) [2021-11-23 02:33:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 219 transitions. [2021-11-23 02:33:02,780 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 219 transitions. Word has length 49 [2021-11-23 02:33:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:02,780 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 219 transitions. [2021-11-23 02:33:02,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:33:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 219 transitions. [2021-11-23 02:33:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 02:33:02,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:02,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:02,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:02,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:02,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1811710477, now seen corresponding path program 1 times [2021-11-23 02:33:03,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:03,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075783797] [2021-11-23 02:33:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:03,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:33:03,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:03,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075783797] [2021-11-23 02:33:03,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075783797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:03,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179023086] [2021-11-23 02:33:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:03,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:03,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:03,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:03,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:33:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:03,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 02:33:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:33:03,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:33:04,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179023086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:04,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [851362781] [2021-11-23 02:33:04,259 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-23 02:33:04,259 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:04,264 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:04,269 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:04,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:14,063 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 303 for LOIs [2021-11-23 02:33:14,140 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 44 for LOIs [2021-11-23 02:33:14,420 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2021-11-23 02:33:14,684 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2021-11-23 02:33:14,687 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:33:18,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5118#(and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift_getWaterLevel_~retValue_acc~2#1| ~waterLevel~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (= |timeShift_getWaterLevel_~retValue_acc~2#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:33:18,876 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:33:18,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:33:18,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 31 [2021-11-23 02:33:18,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493136611] [2021-11-23 02:33:18,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:33:18,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 02:33:18,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 02:33:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2762, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 02:33:18,882 INFO L87 Difference]: Start difference. First operand 190 states and 219 transitions. Second operand has 31 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 28 states have internal predecessors, (99), 13 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-23 02:33:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:21,464 INFO L93 Difference]: Finished difference Result 533 states and 635 transitions. [2021-11-23 02:33:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-23 02:33:21,465 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 28 states have internal predecessors, (99), 13 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) Word has length 52 [2021-11-23 02:33:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:21,469 INFO L225 Difference]: With dead ends: 533 [2021-11-23 02:33:21,469 INFO L226 Difference]: Without dead ends: 429 [2021-11-23 02:33:21,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1085, Invalid=8617, Unknown=0, NotChecked=0, Total=9702 [2021-11-23 02:33:21,475 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 975 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:21,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 787 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:33:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-23 02:33:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 288. [2021-11-23 02:33:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 207 states have (on average 1.183574879227053) internal successors, (245), 222 states have internal predecessors, (245), 39 states have call successors, (39), 39 states have call predecessors, (39), 41 states have return successors, (47), 39 states have call predecessors, (47), 39 states have call successors, (47) [2021-11-23 02:33:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 331 transitions. [2021-11-23 02:33:21,514 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 331 transitions. Word has length 52 [2021-11-23 02:33:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:21,517 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 331 transitions. [2021-11-23 02:33:21,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 28 states have internal predecessors, (99), 13 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-23 02:33:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 331 transitions. [2021-11-23 02:33:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:33:21,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:21,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:21,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:21,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:33:21,743 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1771045684, now seen corresponding path program 2 times [2021-11-23 02:33:21,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:21,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254780185] [2021-11-23 02:33:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:21,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 02:33:22,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:22,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254780185] [2021-11-23 02:33:22,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254780185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:22,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951874747] [2021-11-23 02:33:22,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:33:22,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:22,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:22,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:22,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:33:22,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 02:33:22,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:33:22,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 02:33:22,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:33:22,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:33:22,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951874747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:22,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:33:22,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2021-11-23 02:33:22,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91174505] [2021-11-23 02:33:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:22,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:33:22,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:22,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:33:22,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:33:22,386 INFO L87 Difference]: Start difference. First operand 288 states and 331 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:33:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:22,577 INFO L93 Difference]: Finished difference Result 569 states and 662 transitions. [2021-11-23 02:33:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:33:22,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2021-11-23 02:33:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:22,580 INFO L225 Difference]: With dead ends: 569 [2021-11-23 02:33:22,581 INFO L226 Difference]: Without dead ends: 301 [2021-11-23 02:33:22,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:33:22,583 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 64 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:22,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 148 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:33:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-23 02:33:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 291. [2021-11-23 02:33:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 212 states have (on average 1.1839622641509433) internal successors, (251), 226 states have internal predecessors, (251), 39 states have call successors, (39), 39 states have call predecessors, (39), 39 states have return successors, (46), 39 states have call predecessors, (46), 39 states have call successors, (46) [2021-11-23 02:33:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 336 transitions. [2021-11-23 02:33:22,613 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 336 transitions. Word has length 77 [2021-11-23 02:33:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:22,614 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 336 transitions. [2021-11-23 02:33:22,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:33:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 336 transitions. [2021-11-23 02:33:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:33:22,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:22,616 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:33:22,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 02:33:22,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 02:33:22,817 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash -905449442, now seen corresponding path program 1 times [2021-11-23 02:33:22,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:22,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283109954] [2021-11-23 02:33:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:22,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 44 proven. 52 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:33:23,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283109954] [2021-11-23 02:33:23,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283109954] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433715051] [2021-11-23 02:33:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:23,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:23,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:23,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:33:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:23,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 02:33:23,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 54 proven. 38 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 02:33:24,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 02:33:24,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433715051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:24,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5744078] [2021-11-23 02:33:24,975 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2021-11-23 02:33:24,975 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:24,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:24,976 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:24,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:33,211 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 303 for LOIs [2021-11-23 02:33:33,262 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 44 for LOIs [2021-11-23 02:33:33,667 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2021-11-23 02:33:33,859 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2021-11-23 02:33:33,862 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 29 for LOIs [2021-11-23 02:33:33,865 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:33:38,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8689#(and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift_getWaterLevel_~retValue_acc~2#1| ~waterLevel~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (= |timeShift_getWaterLevel_~retValue_acc~2#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:33:38,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:33:38,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:33:38,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 41 [2021-11-23 02:33:38,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669169738] [2021-11-23 02:33:38,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:33:38,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 02:33:38,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 02:33:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=4152, Unknown=0, NotChecked=0, Total=4692 [2021-11-23 02:33:38,820 INFO L87 Difference]: Start difference. First operand 291 states and 336 transitions. Second operand has 41 states, 38 states have (on average 4.184210526315789) internal successors, (159), 39 states have internal predecessors, (159), 19 states have call successors, (24), 8 states have call predecessors, (24), 16 states have return successors, (25), 18 states have call predecessors, (25), 19 states have call successors, (25) [2021-11-23 02:33:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:39,828 INFO L93 Difference]: Finished difference Result 393 states and 458 transitions. [2021-11-23 02:33:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 02:33:39,828 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 4.184210526315789) internal successors, (159), 39 states have internal predecessors, (159), 19 states have call successors, (24), 8 states have call predecessors, (24), 16 states have return successors, (25), 18 states have call predecessors, (25), 19 states have call successors, (25) Word has length 94 [2021-11-23 02:33:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:39,829 INFO L225 Difference]: With dead ends: 393 [2021-11-23 02:33:39,829 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:33:39,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 233 SyntacticMatches, 8 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=909, Invalid=6063, Unknown=0, NotChecked=0, Total=6972 [2021-11-23 02:33:39,832 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 476 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:39,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 501 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:33:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:33:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:33:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:33:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:33:39,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2021-11-23 02:33:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:39,834 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:33:39,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 4.184210526315789) internal successors, (159), 39 states have internal predecessors, (159), 19 states have call successors, (24), 8 states have call predecessors, (24), 16 states have return successors, (25), 18 states have call predecessors, (25), 19 states have call successors, (25) [2021-11-23 02:33:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:33:39,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:33:39,837 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:33:39,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:40,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:40,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:33:42,274 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 423 430) the Hoare annotation is: (or (not (= ~waterLevel~0 1)) (not (= 1 ~systemActive~0)) (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) [2021-11-23 02:33:42,275 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 423 430) no Hoare annotation was computed. [2021-11-23 02:33:42,275 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 356 362) no Hoare annotation was computed. [2021-11-23 02:33:42,275 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 356 362) the Hoare annotation is: true [2021-11-23 02:33:42,275 INFO L861 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 214 225) the Hoare annotation is: true [2021-11-23 02:33:42,275 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 214 225) no Hoare annotation was computed. [2021-11-23 02:33:42,275 INFO L854 garLoopResultBuilder]: At program point L404(line 404) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1 .cse2) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse3 .cse0 .cse1 .cse2) (or .cse3 (not (= 0 ~systemActive~0))))) [2021-11-23 02:33:42,275 INFO L854 garLoopResultBuilder]: At program point L400(line 400) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (and (= |timeShift_processEnvironment_~tmp~3#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 1)) (not (= |old(~pumpRunning~0)| 1)) .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse3) (or .cse0 (not (= 0 ~systemActive~0))))) [2021-11-23 02:33:42,276 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 175) no Hoare annotation was computed. [2021-11-23 02:33:42,276 INFO L854 garLoopResultBuilder]: At program point L165(lines 165 178) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| ~waterLevel~0)) (.cse6 (= ~waterLevel~0 1)) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (not (= 0 ~systemActive~0))) (or .cse0 .cse2 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse4 .cse5) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 1) .cse1 .cse6)) (or .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse4 (and .cse1 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse3 .cse6) .cse5))) [2021-11-23 02:33:42,276 INFO L854 garLoopResultBuilder]: At program point L165-1(lines 157 181) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| ~waterLevel~0)) (.cse6 (= ~waterLevel~0 1)) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (not (= 0 ~systemActive~0))) (or .cse0 .cse2 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse4 .cse5) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 1) .cse1 .cse6)) (or .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse4 (and .cse1 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse3 .cse6) .cse5))) [2021-11-23 02:33:42,276 INFO L854 garLoopResultBuilder]: At program point L409(line 409) the Hoare annotation is: (let ((.cse1 (or (= ~pumpRunning~0 0) (<= ~waterLevel~0 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (and (= |old(~waterLevel~0)| ~waterLevel~0) .cse1) .cse2 .cse3 .cse4) (or .cse0 (and (= ~waterLevel~0 1) .cse1) (not (= |old(~waterLevel~0)| 1)) .cse2) (or .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3 .cse4) (or .cse0 (not (= 0 ~systemActive~0))))) [2021-11-23 02:33:42,277 INFO L854 garLoopResultBuilder]: At program point L409-1(lines 390 414) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 .cse3)) (or .cse1 (not (= |old(~pumpRunning~0)| 1)) (and .cse2 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse3) .cse4 .cse5) (or .cse0 .cse1 .cse4 (and (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse5) (or .cse0 (not (= 0 ~systemActive~0))))) [2021-11-23 02:33:42,277 INFO L854 garLoopResultBuilder]: At program point L343-1(lines 343 349) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (not (= 0 ~systemActive~0))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2 (and .cse1 .cse3)) (or .cse2 (not (= |old(~pumpRunning~0)| 1)) (and .cse1 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse3) .cse4 .cse5) (or .cse0 .cse2 .cse4 (and (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse5))) [2021-11-23 02:33:42,277 INFO L854 garLoopResultBuilder]: At program point L612(line 612) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1 .cse2) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse3 .cse0 .cse1 .cse2) (or .cse3 (not (= 0 ~systemActive~0))))) [2021-11-23 02:33:42,277 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 332 355) the Hoare annotation is: (let ((.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0))) (and (or .cse0 .cse1 (not (= 0 ~systemActive~0))) (or .cse0 (and .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse3 (not (= |old(~pumpRunning~0)| 1)) .cse4 (and .cse2 (= ~pumpRunning~0 1)) .cse5) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 (= ~waterLevel~0 1))))) [2021-11-23 02:33:42,278 INFO L858 garLoopResultBuilder]: For program point L336-1(lines 335 354) no Hoare annotation was computed. [2021-11-23 02:33:42,278 INFO L858 garLoopResultBuilder]: For program point L398(lines 398 406) no Hoare annotation was computed. [2021-11-23 02:33:42,278 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 332 355) no Hoare annotation was computed. [2021-11-23 02:33:42,278 INFO L854 garLoopResultBuilder]: At program point L394(lines 394 411) the Hoare annotation is: (let ((.cse0 (= ~waterLevel~0 1)) (.cse1 (not (= 1 ~systemActive~0))) (.cse5 (let ((.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or (and (= ~pumpRunning~0 0) .cse6) (and (<= ~waterLevel~0 0) .cse6)))) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse4 (not (= |old(~pumpRunning~0)| 0)))) (and (or (and .cse0 (= ~pumpRunning~0 1)) .cse1 (not (= |old(~pumpRunning~0)| 1)) .cse2 .cse3) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse5 .cse0)) (or .cse4 .cse1 (and .cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse2 .cse3) (or .cse4 (not (= 0 ~systemActive~0))))) [2021-11-23 02:33:42,278 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 612) no Hoare annotation was computed. [2021-11-23 02:33:42,279 INFO L861 garLoopResultBuilder]: At program point L66-1(lines 66 70) the Hoare annotation is: true [2021-11-23 02:33:42,279 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 52 81) no Hoare annotation was computed. [2021-11-23 02:33:42,279 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 52 81) the Hoare annotation is: true [2021-11-23 02:33:42,279 INFO L861 garLoopResultBuilder]: At program point L62-2(lines 62 76) the Hoare annotation is: true [2021-11-23 02:33:42,279 INFO L861 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: true [2021-11-23 02:33:42,279 INFO L858 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2021-11-23 02:33:42,280 INFO L861 garLoopResultBuilder]: At program point L77(lines 52 81) the Hoare annotation is: true [2021-11-23 02:33:42,280 INFO L858 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-11-23 02:33:42,280 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2021-11-23 02:33:42,280 INFO L854 garLoopResultBuilder]: At program point L531(line 531) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2021-11-23 02:33:42,280 INFO L858 garLoopResultBuilder]: For program point L552(lines 551 598) no Hoare annotation was computed. [2021-11-23 02:33:42,280 INFO L858 garLoopResultBuilder]: For program point L581(lines 581 594) no Hoare annotation was computed. [2021-11-23 02:33:42,281 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 02:33:42,281 INFO L854 garLoopResultBuilder]: At program point L573(line 573) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse1 .cse2) (and .cse0 .cse2 (= 0 ~systemActive~0)) (and .cse3 .cse1 .cse2 (= ~pumpRunning~0 1)))) [2021-11-23 02:33:42,281 INFO L861 garLoopResultBuilder]: At program point L602(lines 541 606) the Hoare annotation is: true [2021-11-23 02:33:42,281 INFO L858 garLoopResultBuilder]: For program point L561(lines 561 567) no Hoare annotation was computed. [2021-11-23 02:33:42,281 INFO L858 garLoopResultBuilder]: For program point L561-1(lines 561 567) no Hoare annotation was computed. [2021-11-23 02:33:42,281 INFO L854 garLoopResultBuilder]: At program point L140(lines 140 147) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2021-11-23 02:33:42,282 INFO L861 garLoopResultBuilder]: At program point L140-2(lines 140 147) the Hoare annotation is: true [2021-11-23 02:33:42,282 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:33:42,282 INFO L854 garLoopResultBuilder]: At program point L599(lines 550 600) the Hoare annotation is: false [2021-11-23 02:33:42,282 INFO L858 garLoopResultBuilder]: For program point L529(lines 529 535) no Hoare annotation was computed. [2021-11-23 02:33:42,282 INFO L854 garLoopResultBuilder]: At program point L529-1(lines 529 535) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2021-11-23 02:33:42,282 INFO L858 garLoopResultBuilder]: For program point L587(lines 587 593) no Hoare annotation was computed. [2021-11-23 02:33:42,282 INFO L854 garLoopResultBuilder]: At program point L587-2(lines 581 594) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse1 .cse2) (and .cse0 .cse2 (= 0 ~systemActive~0)) (and .cse3 .cse1 .cse2 (= ~pumpRunning~0 1)))) [2021-11-23 02:33:42,282 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 577) no Hoare annotation was computed. [2021-11-23 02:33:42,282 INFO L858 garLoopResultBuilder]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2021-11-23 02:33:42,282 INFO L854 garLoopResultBuilder]: At program point L596(lines 551 598) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0))) (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (not .cse4)) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2021-11-23 02:33:42,283 INFO L854 garLoopResultBuilder]: At program point L563(line 563) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0))) (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (not .cse4)) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2021-11-23 02:33:42,283 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 364 388) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2021-11-23 02:33:42,283 INFO L854 garLoopResultBuilder]: At program point L378(line 378) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2021-11-23 02:33:42,283 INFO L854 garLoopResultBuilder]: At program point L372(lines 372 380) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (or (= ~pumpRunning~0 0) (<= ~waterLevel~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0) .cse2)) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 1) .cse2)))) [2021-11-23 02:33:42,283 INFO L854 garLoopResultBuilder]: At program point L368(lines 368 385) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2021-11-23 02:33:42,284 INFO L854 garLoopResultBuilder]: At program point L383(line 383) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2021-11-23 02:33:42,284 INFO L858 garLoopResultBuilder]: For program point L383-1(lines 364 388) no Hoare annotation was computed. [2021-11-23 02:33:42,284 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 364 388) no Hoare annotation was computed. [2021-11-23 02:33:42,284 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 202 213) no Hoare annotation was computed. [2021-11-23 02:33:42,284 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 202 213) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) (= |old(~waterLevel~0)| ~waterLevel~0)) (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)))) [2021-11-23 02:33:42,287 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:42,288 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:33:42,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:33:42 BoogieIcfgContainer [2021-11-23 02:33:42,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:33:42,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:33:42,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:33:42,317 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:33:42,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:58" (3/4) ... [2021-11-23 02:33:42,320 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:33:42,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 02:33:42,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 02:33:42,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 02:33:42,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 02:33:42,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 02:33:42,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:33:42,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 02:33:42,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 72 nodes and edges [2021-11-23 02:33:42,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-11-23 02:33:42,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 02:33:42,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 02:33:42,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 02:33:42,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:33:42,341 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:33:42,365 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) [2021-11-23 02:33:42,366 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2021-11-23 02:33:42,367 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((waterLevel == 1 && pumpRunning == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((pumpRunning == 0 && waterLevel <= \old(waterLevel)) || (waterLevel <= 0 && waterLevel <= \old(waterLevel))) && waterLevel == 1))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && waterLevel <= \old(waterLevel)) || (waterLevel <= 0 && waterLevel <= \old(waterLevel))) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 02:33:42,367 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 02:33:42,367 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) [2021-11-23 02:33:42,368 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && tmp == 1) && tmp == waterLevel) && waterLevel == 1)) || !(2 <= \old(waterLevel))) [2021-11-23 02:33:42,368 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && tmp == 1) && tmp == waterLevel) && waterLevel == 1)) || !(2 <= \old(waterLevel))) [2021-11-23 02:33:42,369 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 02:33:42,370 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (tmp == 0 && (pumpRunning == 0 || waterLevel <= 0))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (tmp == 1 && (pumpRunning == 0 || waterLevel <= 0))) [2021-11-23 02:33:42,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:33:42,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:33:42,399 INFO L158 Benchmark]: Toolchain (without parser) took 45037.53ms. Allocated memory was 92.3MB in the beginning and 497.0MB in the end (delta: 404.8MB). Free memory was 55.5MB in the beginning and 323.5MB in the end (delta: -268.0MB). Peak memory consumption was 136.6MB. Max. memory is 16.1GB. [2021-11-23 02:33:42,399 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 61.9MB in the beginning and 61.8MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:33:42,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.57ms. Allocated memory was 92.3MB in the beginning and 136.3MB in the end (delta: 44.0MB). Free memory was 55.4MB in the beginning and 103.2MB in the end (delta: -47.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-23 02:33:42,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.04ms. Allocated memory is still 136.3MB. Free memory was 103.2MB in the beginning and 100.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:33:42,400 INFO L158 Benchmark]: Boogie Preprocessor took 29.26ms. Allocated memory is still 136.3MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:33:42,401 INFO L158 Benchmark]: RCFGBuilder took 682.54ms. Allocated memory is still 136.3MB. Free memory was 99.1MB in the beginning and 76.7MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 02:33:42,401 INFO L158 Benchmark]: TraceAbstraction took 43599.71ms. Allocated memory was 136.3MB in the beginning and 497.0MB in the end (delta: 360.7MB). Free memory was 76.4MB in the beginning and 329.8MB in the end (delta: -253.4MB). Peak memory consumption was 273.5MB. Max. memory is 16.1GB. [2021-11-23 02:33:42,402 INFO L158 Benchmark]: Witness Printer took 81.84ms. Allocated memory is still 497.0MB. Free memory was 329.8MB in the beginning and 323.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:33:42,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 61.9MB in the beginning and 61.8MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.57ms. Allocated memory was 92.3MB in the beginning and 136.3MB in the end (delta: 44.0MB). Free memory was 55.4MB in the beginning and 103.2MB in the end (delta: -47.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.04ms. Allocated memory is still 136.3MB. Free memory was 103.2MB in the beginning and 100.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.26ms. Allocated memory is still 136.3MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 682.54ms. Allocated memory is still 136.3MB. Free memory was 99.1MB in the beginning and 76.7MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 43599.71ms. Allocated memory was 136.3MB in the beginning and 497.0MB in the end (delta: 360.7MB). Free memory was 76.4MB in the beginning and 329.8MB in the end (delta: -253.4MB). Peak memory consumption was 273.5MB. Max. memory is 16.1GB. * Witness Printer took 81.84ms. Allocated memory is still 497.0MB. Free memory was 329.8MB in the beginning and 323.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 612]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.4s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2050 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2025 mSDsluCounter, 2639 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2241 mSDsCounter, 984 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2931 IncrementalHoareTripleChecker+Invalid, 3915 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 984 mSolverCounterUnsat, 734 mSDtfsCounter, 2931 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 797 GetRequests, 546 SyntacticMatches, 8 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6774 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=11, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 280 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 822 PreInvPairs, 878 NumberOfFragments, 1248 HoareAnnotationTreeSize, 822 FomulaSimplifications, 2689 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 35 FomulaSimplificationsInter, 7989 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 774 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 901 ConstructedInterpolants, 0 QuantifiedInterpolants, 3958 SizeOfPredicates, 40 NumberOfNonLiveVariables, 2112 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 400/567 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 612]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && tmp == 1) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 332]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) - InvariantResult [Line: 550]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 541]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: (((((((waterLevel == 1 && pumpRunning == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((pumpRunning == 0 && waterLevel <= \old(waterLevel)) || (waterLevel <= 0 && waterLevel <= \old(waterLevel))) && waterLevel == 1))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && waterLevel <= \old(waterLevel)) || (waterLevel <= 0 && waterLevel <= \old(waterLevel))) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 551]: Loop Invariant Derived loop invariant: (((((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) && !(0 == systemActive)) && pumpRunning == 1) || ((((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) && !(0 == systemActive))) || ((pumpRunning == 0 && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && tmp == 1) && tmp == waterLevel) && waterLevel == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 529]: Loop Invariant Derived loop invariant: pumpRunning == 0 && splverifierCounter == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 372]: Loop Invariant Derived loop invariant: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (tmp == 0 && (pumpRunning == 0 || waterLevel <= 0))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (tmp == 1 && (pumpRunning == 0 || waterLevel <= 0))) - InvariantResult [Line: 343]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 368]: Loop Invariant Derived loop invariant: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((tmp == 1 && pumpRunning == 0) && waterLevel == 1))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && tmp == 1) && tmp == waterLevel) && waterLevel == 1)) || !(2 <= \old(waterLevel))) RESULT: Ultimate proved your program to be correct! [2021-11-23 02:33:42,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3953c3c4-2fd5-43f4-86f1-df5f695195b9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE