./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI --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 311cf727219391e066955da60e9a83cfca77eaf7b53c342c6934d47c5123e76f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:09:23,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:09:23,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:09:23,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:09:23,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:09:23,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:09:23,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:09:23,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:09:23,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:09:23,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:09:23,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:09:23,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:09:23,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:09:23,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:09:23,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:09:23,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:09:23,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:09:23,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:09:23,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:09:23,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:09:23,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:09:23,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:09:23,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:09:23,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:09:23,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:09:23,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:09:23,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:09:23,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:09:23,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:09:23,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:09:23,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:09:23,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:09:23,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:09:23,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:09:23,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:09:23,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:09:23,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:09:23,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:09:23,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:09:23,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:09:23,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:09:23,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:09:23,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:09:23,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:09:23,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:09:23,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:09:23,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:09:23,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:09:23,142 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:09:23,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:09:23,143 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:09:23,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:09:23,143 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:09:23,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:09:23,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:09:23,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:09:23,144 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:09:23,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:09:23,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:09:23,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:09:23,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:09:23,146 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:09:23,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:09:23,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:09:23,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:09:23,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:09:23,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:09:23,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:09:23,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:09:23,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:09:23,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:09:23,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:09:23,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:09:23,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:09:23,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:23,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:09:23,149 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:09:23,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:09:23,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:09:23,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:09:23,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:09:23,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:09:23,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:09:23,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311cf727219391e066955da60e9a83cfca77eaf7b53c342c6934d47c5123e76f [2022-11-03 02:09:23,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:09:23,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:09:23,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:09:23,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:09:23,466 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:09:23,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2022-11-03 02:09:23,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/data/d3c2f8bf1/4812e723da2641d3b4c43162da907808/FLAG0008c3556 [2022-11-03 02:09:24,088 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:09:24,089 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2022-11-03 02:09:24,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/data/d3c2f8bf1/4812e723da2641d3b4c43162da907808/FLAG0008c3556 [2022-11-03 02:09:24,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/data/d3c2f8bf1/4812e723da2641d3b4c43162da907808 [2022-11-03 02:09:24,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:09:24,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:09:24,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:24,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:09:24,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:09:24,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:09:24" (1/1) ... [2022-11-03 02:09:24,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d93893e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:24, skipping insertion in model container [2022-11-03 02:09:24,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:09:24" (1/1) ... [2022-11-03 02:09:24,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:09:24,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:09:24,857 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_02e6cd12-e261-4f69-98c8-0f1075d8a255/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c[15256,15269] [2022-11-03 02:09:24,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:24,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:09:25,007 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_02e6cd12-e261-4f69-98c8-0f1075d8a255/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c[15256,15269] [2022-11-03 02:09:25,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:25,046 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:09:25,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25 WrapperNode [2022-11-03 02:09:25,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:25,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:25,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:09:25,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:09:25,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,108 INFO L138 Inliner]: procedures = 56, calls = 156, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 254 [2022-11-03 02:09:25,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:25,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:09:25,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:09:25,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:09:25,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:09:25,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:09:25,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:09:25,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:09:25,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (1/1) ... [2022-11-03 02:09:25,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:25,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:09:25,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:09:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:09:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 02:09:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 02:09:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-03 02:09:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-03 02:09:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 02:09:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 02:09:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 02:09:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 02:09:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 02:09:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 02:09:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 02:09:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 02:09:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-03 02:09:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-03 02:09:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:09:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 02:09:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 02:09:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:09:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:09:25,339 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:09:25,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:09:25,752 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:09:25,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:09:25,875 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:09:25,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:25 BoogieIcfgContainer [2022-11-03 02:09:25,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:09:25,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:09:25,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:09:25,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:09:25,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:09:24" (1/3) ... [2022-11-03 02:09:25,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d1b711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:25, skipping insertion in model container [2022-11-03 02:09:25,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:25" (2/3) ... [2022-11-03 02:09:25,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d1b711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:25, skipping insertion in model container [2022-11-03 02:09:25,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:25" (3/3) ... [2022-11-03 02:09:25,888 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2022-11-03 02:09:25,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:09:25,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:09:25,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:09:25,998 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ffa5d79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:09:25,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:09:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 40 states have (on average 1.45) internal successors, (58), 49 states have internal predecessors, (58), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 02:09:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:09:26,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:26,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1937810965, now seen corresponding path program 1 times [2022-11-03 02:09:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426291269] [2022-11-03 02:09:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:26,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426291269] [2022-11-03 02:09:26,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426291269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:26,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:26,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:09:26,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100094077] [2022-11-03 02:09:26,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:26,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:09:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:09:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:09:26,352 INFO L87 Difference]: Start difference. First operand has 63 states, 40 states have (on average 1.45) internal successors, (58), 49 states have internal predecessors, (58), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:26,420 INFO L93 Difference]: Finished difference Result 124 states and 169 transitions. [2022-11-03 02:09:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:09:26,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 02:09:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:26,431 INFO L225 Difference]: With dead ends: 124 [2022-11-03 02:09:26,431 INFO L226 Difference]: Without dead ends: 58 [2022-11-03 02:09:26,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:09:26,438 INFO L413 NwaCegarLoop]: 64 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, 64 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 [2022-11-03 02:09:26,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:09:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-03 02:09:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-03 02:09:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:09:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2022-11-03 02:09:26,498 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 16 [2022-11-03 02:09:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:26,498 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2022-11-03 02:09:26,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2022-11-03 02:09:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:09:26,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:26,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:09:26,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:26,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1505605115, now seen corresponding path program 1 times [2022-11-03 02:09:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496551650] [2022-11-03 02:09:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:26,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:26,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496551650] [2022-11-03 02:09:26,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496551650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:26,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:26,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700419120] [2022-11-03 02:09:26,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:26,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:26,653 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:26,712 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2022-11-03 02:09:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:26,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 02:09:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:26,714 INFO L225 Difference]: With dead ends: 88 [2022-11-03 02:09:26,714 INFO L226 Difference]: Without dead ends: 50 [2022-11-03 02:09:26,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:26,716 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 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 [2022-11-03 02:09:26,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:09:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-03 02:09:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-03 02:09:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.375) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 02:09:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-11-03 02:09:26,733 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 17 [2022-11-03 02:09:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:26,733 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-11-03 02:09:26,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-11-03 02:09:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:09:26,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:26,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:09:26,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1726774957, now seen corresponding path program 1 times [2022-11-03 02:09:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782543036] [2022-11-03 02:09:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:26,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:26,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782543036] [2022-11-03 02:09:26,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782543036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:26,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:26,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:09:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221811164] [2022-11-03 02:09:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:09:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:09:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:09:26,926 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:27,108 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2022-11-03 02:09:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:09:27,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-03 02:09:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:27,111 INFO L225 Difference]: With dead ends: 145 [2022-11-03 02:09:27,111 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 02:09:27,112 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:09:27,113 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:27,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 144 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 02:09:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2022-11-03 02:09:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 63 states have internal predecessors, (71), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (16), 11 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-03 02:09:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2022-11-03 02:09:27,131 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 20 [2022-11-03 02:09:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:27,131 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2022-11-03 02:09:27,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2022-11-03 02:09:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:09:27,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:27,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:27,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:09:27,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1399588135, now seen corresponding path program 1 times [2022-11-03 02:09:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:27,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818484855] [2022-11-03 02:09:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:27,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:27,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818484855] [2022-11-03 02:09:27,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818484855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:27,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:27,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:09:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468784542] [2022-11-03 02:09:27,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:27,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:09:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:27,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:09:27,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:09:27,266 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:27,408 INFO L93 Difference]: Finished difference Result 234 states and 305 transitions. [2022-11-03 02:09:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:09:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-03 02:09:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:27,411 INFO L225 Difference]: With dead ends: 234 [2022-11-03 02:09:27,411 INFO L226 Difference]: Without dead ends: 156 [2022-11-03 02:09:27,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:09:27,413 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 42 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:27,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 258 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-03 02:09:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2022-11-03 02:09:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 97 states have (on average 1.3505154639175259) internal successors, (131), 116 states have internal predecessors, (131), 28 states have call successors, (28), 22 states have call predecessors, (28), 22 states have return successors, (30), 20 states have call predecessors, (30), 28 states have call successors, (30) [2022-11-03 02:09:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 189 transitions. [2022-11-03 02:09:27,440 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 189 transitions. Word has length 23 [2022-11-03 02:09:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:27,440 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 189 transitions. [2022-11-03 02:09:27,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 189 transitions. [2022-11-03 02:09:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:09:27,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:27,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:09:27,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1491662853, now seen corresponding path program 1 times [2022-11-03 02:09:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:27,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276281062] [2022-11-03 02:09:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:27,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:27,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276281062] [2022-11-03 02:09:27,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276281062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:27,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:27,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:09:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030131829] [2022-11-03 02:09:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:27,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:09:27,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:09:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:09:27,624 INFO L87 Difference]: Start difference. First operand 148 states and 189 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:27,741 INFO L93 Difference]: Finished difference Result 360 states and 476 transitions. [2022-11-03 02:09:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:09:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-03 02:09:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:27,756 INFO L225 Difference]: With dead ends: 360 [2022-11-03 02:09:27,757 INFO L226 Difference]: Without dead ends: 214 [2022-11-03 02:09:27,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:27,764 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 35 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:27,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 154 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-03 02:09:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 206. [2022-11-03 02:09:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 141 states have (on average 1.2836879432624113) internal successors, (181), 157 states have internal predecessors, (181), 33 states have call successors, (33), 31 states have call predecessors, (33), 31 states have return successors, (45), 31 states have call predecessors, (45), 33 states have call successors, (45) [2022-11-03 02:09:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 259 transitions. [2022-11-03 02:09:27,815 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 259 transitions. Word has length 26 [2022-11-03 02:09:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:27,816 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 259 transitions. [2022-11-03 02:09:27,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 259 transitions. [2022-11-03 02:09:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:09:27,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:27,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:09:27,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -747352064, now seen corresponding path program 1 times [2022-11-03 02:09:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:27,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218039514] [2022-11-03 02:09:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:27,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:27,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218039514] [2022-11-03 02:09:27,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218039514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:27,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932674211] [2022-11-03 02:09:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:27,889 INFO L87 Difference]: Start difference. First operand 206 states and 259 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:09:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:27,966 INFO L93 Difference]: Finished difference Result 414 states and 520 transitions. [2022-11-03 02:09:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:27,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-03 02:09:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:27,969 INFO L225 Difference]: With dead ends: 414 [2022-11-03 02:09:27,970 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 02:09:27,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:27,973 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:27,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 116 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 02:09:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-03 02:09:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 112 states have internal predecessors, (124), 24 states have call successors, (24), 24 states have call predecessors, (24), 24 states have return successors, (32), 22 states have call predecessors, (32), 24 states have call successors, (32) [2022-11-03 02:09:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 180 transitions. [2022-11-03 02:09:28,011 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 180 transitions. Word has length 34 [2022-11-03 02:09:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:28,012 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 180 transitions. [2022-11-03 02:09:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:09:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 180 transitions. [2022-11-03 02:09:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:09:28,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:28,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:28,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:09:28,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 53873058, now seen corresponding path program 1 times [2022-11-03 02:09:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:28,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079176184] [2022-11-03 02:09:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:28,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:28,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079176184] [2022-11-03 02:09:28,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079176184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:28,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:28,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:09:28,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434906338] [2022-11-03 02:09:28,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:28,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:09:28,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:28,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:09:28,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:09:28,405 INFO L87 Difference]: Start difference. First operand 150 states and 180 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:09:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:28,569 INFO L93 Difference]: Finished difference Result 439 states and 533 transitions. [2022-11-03 02:09:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:09:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-03 02:09:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:28,571 INFO L225 Difference]: With dead ends: 439 [2022-11-03 02:09:28,571 INFO L226 Difference]: Without dead ends: 291 [2022-11-03 02:09:28,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:09:28,576 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 115 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 144 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-03 02:09:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 237. [2022-11-03 02:09:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 162 states have (on average 1.1975308641975309) internal successors, (194), 174 states have internal predecessors, (194), 35 states have call successors, (35), 35 states have call predecessors, (35), 39 states have return successors, (47), 35 states have call predecessors, (47), 35 states have call successors, (47) [2022-11-03 02:09:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 276 transitions. [2022-11-03 02:09:28,606 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 276 transitions. Word has length 31 [2022-11-03 02:09:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:28,607 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 276 transitions. [2022-11-03 02:09:28,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:09:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 276 transitions. [2022-11-03 02:09:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:09:28,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:28,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:28,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:09:28,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash 519075488, now seen corresponding path program 1 times [2022-11-03 02:09:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:28,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908944529] [2022-11-03 02:09:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:28,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:09:28,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:09:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:09:28,669 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:09:28,669 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:09:28,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:09:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:09:28,678 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:28,682 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:09:28,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:09:28 BoogieIcfgContainer [2022-11-03 02:09:28,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:09:28,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:09:28,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:09:28,725 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:09:28,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:25" (3/4) ... [2022-11-03 02:09:28,727 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:09:28,778 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:09:28,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:09:28,779 INFO L158 Benchmark]: Toolchain (without parser) took 4400.62ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 76.1MB in the beginning and 86.5MB in the end (delta: -10.4MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,779 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:09:28,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.13ms. Allocated memory is still 115.3MB. Free memory was 75.9MB in the beginning and 82.3MB in the end (delta: -6.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.14ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 79.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,780 INFO L158 Benchmark]: Boogie Preprocessor took 27.91ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,780 INFO L158 Benchmark]: RCFGBuilder took 740.03ms. Allocated memory is still 115.3MB. Free memory was 78.1MB in the beginning and 49.1MB in the end (delta: 29.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,781 INFO L158 Benchmark]: TraceAbstraction took 2842.35ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 48.8MB in the beginning and 90.7MB in the end (delta: -41.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,781 INFO L158 Benchmark]: Witness Printer took 53.77ms. Allocated memory is still 157.3MB. Free memory was 90.7MB in the beginning and 86.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:28,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.13ms. Allocated memory is still 115.3MB. Free memory was 75.9MB in the beginning and 82.3MB in the end (delta: -6.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.14ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 79.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.91ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 740.03ms. Allocated memory is still 115.3MB. Free memory was 78.1MB in the beginning and 49.1MB in the end (delta: 29.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2842.35ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 48.8MB in the beginning and 90.7MB in the end (delta: -41.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 53.77ms. Allocated memory is still 157.3MB. Free memory was 90.7MB in the beginning and 86.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 714]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L513] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L783] int cleanupTimeShifts = 4; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; [L856] int retValue_acc ; [L857] int tmp ; [L861] FCALL select_helpers() [L862] FCALL select_features() [L863] CALL, EXPR valid_product() [L748] int retValue_acc ; [L751] retValue_acc = 1 [L752] return (retValue_acc); [L863] RET, EXPR valid_product() [L863] tmp = valid_product() [L865] COND TRUE \read(tmp) [L867] FCALL setup() [L868] CALL runTest() [L850] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L77] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 [L77] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L87] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 [L87] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=1, waterLevel=2] [L110] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L139] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L146] COND TRUE \read(systemActive) [L148] CALL processEnvironment() [L194] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L212] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L171] COND TRUE ! pumpRunning [L173] CALL, EXPR isHighWaterLevel() [L291] int retValue_acc ; [L292] int tmp ; [L293] int tmp___0 ; [L297] CALL, EXPR isHighWaterSensorDry() [L960] int retValue_acc ; [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); [L297] RET, EXPR isHighWaterSensorDry() [L297] tmp = isHighWaterSensorDry() [L299] COND FALSE !(\read(tmp)) [L302] tmp___0 = 1 [L304] retValue_acc = tmp___0 [L305] return (retValue_acc); [L173] RET, EXPR isHighWaterLevel() [L173] tmp = isHighWaterLevel() [L175] COND TRUE \read(tmp) [L177] CALL activatePump() [L222] pumpRunning = 1 [L177] RET activatePump() [L212] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L148] RET processEnvironment() [L154] CALL __utac_acc__Specification1_spec__1() [L758] int tmp ; [L759] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L763] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); [L763] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L763] tmp = isMethaneLevelCritical() [L765] COND TRUE \read(tmp) [L767] CALL, EXPR isPumpRunning() [L246] int retValue_acc ; [L249] retValue_acc = pumpRunning [L250] return (retValue_acc); [L767] RET, EXPR isPumpRunning() [L767] tmp___0 = isPumpRunning() [L769] COND TRUE \read(tmp___0) [L771] CALL __automaton_fail() [L714] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 321 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 963 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 650 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 432 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=7, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 87 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 02:09:28,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02e6cd12-e261-4f69-98c8-0f1075d8a255/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE