./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9 --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 68cd47586ea836a40d34f69dc7bca714ffc0af5c5bf2f7fbd8cfbbd6f1019685 --- 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-6b4ec56 [2022-11-20 21:06:18,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:06:18,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:06:18,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:06:18,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:06:18,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:06:18,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:06:18,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:06:18,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:06:19,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:06:19,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:06:19,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:06:19,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:06:19,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:06:19,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:06:19,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:06:19,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:06:19,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:06:19,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:06:19,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:06:19,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:06:19,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:06:19,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:06:19,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:06:19,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:06:19,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:06:19,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:06:19,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:06:19,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:06:19,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:06:19,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:06:19,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:06:19,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:06:19,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:06:19,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:06:19,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:06:19,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:06:19,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:06:19,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:06:19,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:06:19,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:06:19,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:06:19,095 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:06:19,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:06:19,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:06:19,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:06:19,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:06:19,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:06:19,098 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:06:19,098 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:06:19,099 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:06:19,099 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:06:19,100 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:06:19,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:06:19,100 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:06:19,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:06:19,101 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:06:19,101 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:06:19,101 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:06:19,101 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:06:19,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:06:19,102 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:06:19,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:06:19,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:06:19,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:06:19,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:06:19,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:06:19,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:06:19,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:06:19,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:06:19,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:06:19,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:06:19,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:06:19,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:06:19,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:06:19,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:06:19,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:06:19,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:06:19,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:06:19,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:06:19,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:06:19,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:06:19,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:06:19,108 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_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68cd47586ea836a40d34f69dc7bca714ffc0af5c5bf2f7fbd8cfbbd6f1019685 [2022-11-20 21:06:19,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:06:19,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:06:19,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:06:19,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:06:19,433 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:06:19,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c [2022-11-20 21:06:22,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:06:22,771 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:06:22,771 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c [2022-11-20 21:06:22,796 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/data/c5bea9b48/f7e2a88752214b0289b82c23a87c11ef/FLAG4b0263992 [2022-11-20 21:06:22,809 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/data/c5bea9b48/f7e2a88752214b0289b82c23a87c11ef [2022-11-20 21:06:22,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:06:22,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:06:22,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:06:22,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:06:22,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:06:22,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:06:22" (1/1) ... [2022-11-20 21:06:22,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79336cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:22, skipping insertion in model container [2022-11-20 21:06:22,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:06:22" (1/1) ... [2022-11-20 21:06:22,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:06:22,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:06:23,082 WARN L237 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_5c660045-68a3-4637-b40c-22204e7463fb/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c[9171,9184] [2022-11-20 21:06:23,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:06:23,170 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:06:23,227 WARN L237 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_5c660045-68a3-4637-b40c-22204e7463fb/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c[9171,9184] [2022-11-20 21:06:23,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:06:23,313 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:06:23,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23 WrapperNode [2022-11-20 21:06:23,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:06:23,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:06:23,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:06:23,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:06:23,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,388 INFO L138 Inliner]: procedures = 57, calls = 102, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 227 [2022-11-20 21:06:23,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:06:23,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:06:23,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:06:23,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:06:23,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:06:23,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:06:23,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:06:23,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:06:23,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (1/1) ... [2022-11-20 21:06:23,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:06:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:23,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:06:23,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:06:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:06:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 21:06:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 21:06:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 21:06:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 21:06:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 21:06:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 21:06:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 21:06:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 21:06:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 21:06:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 21:06:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-20 21:06:23,514 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-20 21:06:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:06:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 21:06:23,514 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 21:06:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:06:23,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:06:23,599 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:06:23,601 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:06:23,955 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:06:24,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:06:24,152 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 21:06:24,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:06:24 BoogieIcfgContainer [2022-11-20 21:06:24,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:06:24,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:06:24,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:06:24,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:06:24,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:06:22" (1/3) ... [2022-11-20 21:06:24,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21da757a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:06:24, skipping insertion in model container [2022-11-20 21:06:24,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:23" (2/3) ... [2022-11-20 21:06:24,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21da757a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:06:24, skipping insertion in model container [2022-11-20 21:06:24,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:06:24" (3/3) ... [2022-11-20 21:06:24,183 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2022-11-20 21:06:24,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:06:24,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:06:24,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:06:24,283 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;@1ae4ef03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:06:24,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:06:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 21:06:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:06:24,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:24,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:24,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:24,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1369029533, now seen corresponding path program 1 times [2022-11-20 21:06:24,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:24,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233598600] [2022-11-20 21:06:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:24,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233598600] [2022-11-20 21:06:24,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233598600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:24,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:24,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:06:24,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743762926] [2022-11-20 21:06:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:06:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:06:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:06:24,609 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:24,707 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2022-11-20 21:06:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:06:24,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 21:06:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:24,720 INFO L225 Difference]: With dead ends: 116 [2022-11-20 21:06:24,720 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 21:06:24,724 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 [2022-11-20 21:06:24,727 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:24,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:06:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 21:06:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-20 21:06:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 21:06:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2022-11-20 21:06:24,803 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2022-11-20 21:06:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:24,805 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2022-11-20 21:06:24,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2022-11-20 21:06:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:06:24,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:24,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:24,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:06:24,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash -410986028, now seen corresponding path program 1 times [2022-11-20 21:06:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:24,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348948785] [2022-11-20 21:06:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:25,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:25,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348948785] [2022-11-20 21:06:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348948785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:25,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:25,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:06:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088586117] [2022-11-20 21:06:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:25,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:06:25,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:06:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:06:25,026 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:25,096 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-11-20 21:06:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:06:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 21:06:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:25,098 INFO L225 Difference]: With dead ends: 80 [2022-11-20 21:06:25,098 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 21:06:25,099 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 [2022-11-20 21:06:25,103 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:25,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:06:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 21:06:25,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-20 21:06:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 21:06:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-20 21:06:25,115 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2022-11-20 21:06:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:25,115 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-20 21:06:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-20 21:06:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 21:06:25,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:25,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:06:25,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1528647160, now seen corresponding path program 1 times [2022-11-20 21:06:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:25,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788571688] [2022-11-20 21:06:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:25,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:25,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788571688] [2022-11-20 21:06:25,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788571688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:25,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:25,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:06:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014953440] [2022-11-20 21:06:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:25,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:06:25,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:06:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:06:25,249 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:25,423 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2022-11-20 21:06:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:06:25,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 21:06:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:25,429 INFO L225 Difference]: With dead ends: 133 [2022-11-20 21:06:25,429 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 21:06:25,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:06:25,434 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 74 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:25,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 126 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:06:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 21:06:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-11-20 21:06:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 59 states have internal predecessors, (67), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 21:06:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-20 21:06:25,452 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 16 [2022-11-20 21:06:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:25,452 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-20 21:06:25,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-20 21:06:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 21:06:25,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:25,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:25,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:06:25,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1293336084, now seen corresponding path program 1 times [2022-11-20 21:06:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:25,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992235868] [2022-11-20 21:06:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:25,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992235868] [2022-11-20 21:06:25,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992235868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:25,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:25,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:06:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057907839] [2022-11-20 21:06:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:25,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:06:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:06:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:06:25,669 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:25,841 INFO L93 Difference]: Finished difference Result 222 states and 298 transitions. [2022-11-20 21:06:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:06:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 21:06:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:25,847 INFO L225 Difference]: With dead ends: 222 [2022-11-20 21:06:25,848 INFO L226 Difference]: Without dead ends: 152 [2022-11-20 21:06:25,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:06:25,859 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:25,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 216 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:06:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-20 21:06:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2022-11-20 21:06:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 116 states have internal predecessors, (135), 21 states have call successors, (21), 18 states have call predecessors, (21), 20 states have return successors, (26), 19 states have call predecessors, (26), 21 states have call successors, (26) [2022-11-20 21:06:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2022-11-20 21:06:25,909 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 19 [2022-11-20 21:06:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:25,910 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2022-11-20 21:06:25,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:06:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2022-11-20 21:06:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 21:06:25,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:25,917 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] [2022-11-20 21:06:25,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:06:25,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1362301905, now seen corresponding path program 1 times [2022-11-20 21:06:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:25,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887154632] [2022-11-20 21:06:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:26,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:26,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887154632] [2022-11-20 21:06:26,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887154632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:26,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:26,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 21:06:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808825791] [2022-11-20 21:06:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:26,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 21:06:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 21:06:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:06:26,326 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-20 21:06:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:26,814 INFO L93 Difference]: Finished difference Result 396 states and 525 transitions. [2022-11-20 21:06:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 21:06:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2022-11-20 21:06:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:26,825 INFO L225 Difference]: With dead ends: 396 [2022-11-20 21:06:26,825 INFO L226 Difference]: Without dead ends: 326 [2022-11-20 21:06:26,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 21:06:26,829 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 202 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:26,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 284 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:06:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-20 21:06:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 291. [2022-11-20 21:06:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.3043478260869565) internal successors, (270), 234 states have internal predecessors, (270), 42 states have call successors, (42), 36 states have call predecessors, (42), 41 states have return successors, (55), 40 states have call predecessors, (55), 42 states have call successors, (55) [2022-11-20 21:06:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 367 transitions. [2022-11-20 21:06:26,925 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 367 transitions. Word has length 22 [2022-11-20 21:06:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:26,925 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 367 transitions. [2022-11-20 21:06:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-20 21:06:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 367 transitions. [2022-11-20 21:06:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 21:06:26,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:26,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:06:26,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1017599571, now seen corresponding path program 1 times [2022-11-20 21:06:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:26,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432336777] [2022-11-20 21:06:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:26,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:26,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:26,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432336777] [2022-11-20 21:06:26,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432336777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:26,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:26,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:06:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904310361] [2022-11-20 21:06:26,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:06:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:06:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:06:26,986 INFO L87 Difference]: Start difference. First operand 291 states and 367 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-20 21:06:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:27,110 INFO L93 Difference]: Finished difference Result 554 states and 699 transitions. [2022-11-20 21:06:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:06:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 47 [2022-11-20 21:06:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:27,115 INFO L225 Difference]: With dead ends: 554 [2022-11-20 21:06:27,115 INFO L226 Difference]: Without dead ends: 214 [2022-11-20 21:06:27,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:06:27,119 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 112 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:06:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-20 21:06:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2022-11-20 21:06:27,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 138 states have (on average 1.2753623188405796) internal successors, (176), 157 states have internal predecessors, (176), 28 states have call successors, (28), 25 states have call predecessors, (28), 29 states have return successors, (32), 28 states have call predecessors, (32), 28 states have call successors, (32) [2022-11-20 21:06:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 236 transitions. [2022-11-20 21:06:27,175 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 236 transitions. Word has length 47 [2022-11-20 21:06:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:27,176 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 236 transitions. [2022-11-20 21:06:27,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-20 21:06:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 236 transitions. [2022-11-20 21:06:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:06:27,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:27,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:27,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 21:06:27,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2080281671, now seen corresponding path program 1 times [2022-11-20 21:06:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:27,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811491350] [2022-11-20 21:06:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:27,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:27,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811491350] [2022-11-20 21:06:27,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811491350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:27,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:27,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 21:06:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501448891] [2022-11-20 21:06:27,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:27,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:06:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:27,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:06:27,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:06:27,556 INFO L87 Difference]: Start difference. First operand 196 states and 236 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:06:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:27,894 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2022-11-20 21:06:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 21:06:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2022-11-20 21:06:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:27,897 INFO L225 Difference]: With dead ends: 321 [2022-11-20 21:06:27,897 INFO L226 Difference]: Without dead ends: 209 [2022-11-20 21:06:27,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-20 21:06:27,899 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:27,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 218 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:06:27,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-20 21:06:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 173. [2022-11-20 21:06:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 121 states have (on average 1.28099173553719) internal successors, (155), 137 states have internal predecessors, (155), 25 states have call successors, (25), 22 states have call predecessors, (25), 26 states have return successors, (30), 25 states have call predecessors, (30), 25 states have call successors, (30) [2022-11-20 21:06:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 210 transitions. [2022-11-20 21:06:27,925 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 210 transitions. Word has length 44 [2022-11-20 21:06:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:27,925 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 210 transitions. [2022-11-20 21:06:27,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:06:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 210 transitions. [2022-11-20 21:06:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 21:06:27,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:27,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 21:06:27,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1847334260, now seen corresponding path program 1 times [2022-11-20 21:06:27,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:27,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095337431] [2022-11-20 21:06:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:27,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:28,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:28,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095337431] [2022-11-20 21:06:28,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095337431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:06:28,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656744358] [2022-11-20 21:06:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:28,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:28,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:06:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:06:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:28,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 21:06:28,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:06:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:06:28,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:06:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:06:29,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656744358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:06:29,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1571873128] [2022-11-20 21:06:29,511 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-20 21:06:29,511 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:06:29,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:06:29,534 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:06:29,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:06:33,190 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 50 for LOIs [2022-11-20 21:06:33,201 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-20 21:06:33,529 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-20 21:06:33,559 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2022-11-20 21:06:33,562 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:06:38,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4695#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 21:06:38,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:06:38,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:06:38,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 28 [2022-11-20 21:06:38,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964661420] [2022-11-20 21:06:38,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:06:38,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 21:06:38,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 21:06:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2663, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 21:06:38,090 INFO L87 Difference]: Start difference. First operand 173 states and 210 transitions. Second operand has 28 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 12 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-20 21:06:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:41,076 INFO L93 Difference]: Finished difference Result 595 states and 782 transitions. [2022-11-20 21:06:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 21:06:41,077 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 12 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 47 [2022-11-20 21:06:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:41,079 INFO L225 Difference]: With dead ends: 595 [2022-11-20 21:06:41,079 INFO L226 Difference]: Without dead ends: 444 [2022-11-20 21:06:41,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3504 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1216, Invalid=8486, Unknown=0, NotChecked=0, Total=9702 [2022-11-20 21:06:41,085 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 820 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:41,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 766 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 21:06:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-20 21:06:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 346. [2022-11-20 21:06:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 246 states have (on average 1.2520325203252032) internal successors, (308), 271 states have internal predecessors, (308), 44 states have call successors, (44), 40 states have call predecessors, (44), 55 states have return successors, (67), 51 states have call predecessors, (67), 44 states have call successors, (67) [2022-11-20 21:06:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 419 transitions. [2022-11-20 21:06:41,148 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 419 transitions. Word has length 47 [2022-11-20 21:06:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:41,149 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 419 transitions. [2022-11-20 21:06:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 12 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-20 21:06:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 419 transitions. [2022-11-20 21:06:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 21:06:41,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:41,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:41,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 21:06:41,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:41,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1675977768, now seen corresponding path program 1 times [2022-11-20 21:06:41,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:41,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638961053] [2022-11-20 21:06:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:06:42,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638961053] [2022-11-20 21:06:42,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638961053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:06:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364867498] [2022-11-20 21:06:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:42,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:42,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:06:42,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:06:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:42,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 21:06:42,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:06:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 21:06:42,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:06:42,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364867498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:42,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:06:42,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 20 [2022-11-20 21:06:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714512459] [2022-11-20 21:06:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:42,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:06:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:06:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:06:42,533 INFO L87 Difference]: Start difference. First operand 346 states and 419 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 21:06:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:42,833 INFO L93 Difference]: Finished difference Result 767 states and 960 transitions. [2022-11-20 21:06:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 21:06:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-20 21:06:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:42,840 INFO L225 Difference]: With dead ends: 767 [2022-11-20 21:06:42,841 INFO L226 Difference]: Without dead ends: 451 [2022-11-20 21:06:42,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-11-20 21:06:42,844 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 66 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:42,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:06:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-20 21:06:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 421. [2022-11-20 21:06:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 304 states have (on average 1.256578947368421) internal successors, (382), 332 states have internal predecessors, (382), 52 states have call successors, (52), 47 states have call predecessors, (52), 64 states have return successors, (81), 61 states have call predecessors, (81), 52 states have call successors, (81) [2022-11-20 21:06:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 515 transitions. [2022-11-20 21:06:42,909 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 515 transitions. Word has length 72 [2022-11-20 21:06:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:42,911 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 515 transitions. [2022-11-20 21:06:42,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 21:06:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 515 transitions. [2022-11-20 21:06:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 21:06:42,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:42,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:42,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:06:43,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:43,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1673814336, now seen corresponding path program 2 times [2022-11-20 21:06:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:43,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506636423] [2022-11-20 21:06:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 53 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 21:06:44,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506636423] [2022-11-20 21:06:44,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506636423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:06:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427570327] [2022-11-20 21:06:44,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:06:44,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:44,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:06:44,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:06:44,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 21:06:44,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:06:44,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 21:06:44,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:06:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 21:06:44,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:06:44,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427570327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:44,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:06:44,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 20 [2022-11-20 21:06:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321446741] [2022-11-20 21:06:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:06:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:06:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:06:44,188 INFO L87 Difference]: Start difference. First operand 421 states and 515 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 21:06:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:44,330 INFO L93 Difference]: Finished difference Result 661 states and 837 transitions. [2022-11-20 21:06:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:06:44,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 89 [2022-11-20 21:06:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:44,333 INFO L225 Difference]: With dead ends: 661 [2022-11-20 21:06:44,333 INFO L226 Difference]: Without dead ends: 398 [2022-11-20 21:06:44,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-20 21:06:44,335 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 46 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:44,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 135 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:06:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-20 21:06:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 359. [2022-11-20 21:06:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 258 states have (on average 1.197674418604651) internal successors, (309), 281 states have internal predecessors, (309), 45 states have call successors, (45), 42 states have call predecessors, (45), 55 states have return successors, (73), 51 states have call predecessors, (73), 45 states have call successors, (73) [2022-11-20 21:06:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 427 transitions. [2022-11-20 21:06:44,391 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 427 transitions. Word has length 89 [2022-11-20 21:06:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:44,391 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 427 transitions. [2022-11-20 21:06:44,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 21:06:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 427 transitions. [2022-11-20 21:06:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 21:06:44,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:44,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:44,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:06:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:44,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1410569396, now seen corresponding path program 3 times [2022-11-20 21:06:44,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:44,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485840957] [2022-11-20 21:06:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:06:45,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485840957] [2022-11-20 21:06:45,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485840957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:06:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015288134] [2022-11-20 21:06:45,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 21:06:45,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:45,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:45,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:06:45,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:06:45,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 21:06:45,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:06:45,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 21:06:45,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:06:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 21:06:45,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:06:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 21:06:45,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015288134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:06:45,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1632685868] [2022-11-20 21:06:45,784 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-20 21:06:45,784 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:06:45,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:06:45,785 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:06:45,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:06:48,684 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 50 for LOIs [2022-11-20 21:06:48,693 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-20 21:06:49,054 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-20 21:06:49,087 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2022-11-20 21:06:49,089 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:06:53,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10752#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 21:06:53,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:06:53,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:06:53,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 6] total 23 [2022-11-20 21:06:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573284192] [2022-11-20 21:06:53,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:06:53,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 21:06:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 21:06:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2182, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 21:06:53,323 INFO L87 Difference]: Start difference. First operand 359 states and 427 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-20 21:06:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:56,016 INFO L93 Difference]: Finished difference Result 1037 states and 1283 transitions. [2022-11-20 21:06:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-20 21:06:56,023 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) Word has length 91 [2022-11-20 21:06:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:56,031 INFO L225 Difference]: With dead ends: 1037 [2022-11-20 21:06:56,032 INFO L226 Difference]: Without dead ends: 708 [2022-11-20 21:06:56,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3589 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1357, Invalid=8543, Unknown=0, NotChecked=0, Total=9900 [2022-11-20 21:06:56,037 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 774 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:56,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 572 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 21:06:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-11-20 21:06:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 605. [2022-11-20 21:06:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 436 states have (on average 1.1903669724770642) internal successors, (519), 477 states have internal predecessors, (519), 75 states have call successors, (75), 66 states have call predecessors, (75), 93 states have return successors, (127), 86 states have call predecessors, (127), 75 states have call successors, (127) [2022-11-20 21:06:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 721 transitions. [2022-11-20 21:06:56,122 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 721 transitions. Word has length 91 [2022-11-20 21:06:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:56,124 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 721 transitions. [2022-11-20 21:06:56,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-20 21:06:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 721 transitions. [2022-11-20 21:06:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 21:06:56,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:56,132 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:56,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:06:56,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 21:06:56,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1695781844, now seen corresponding path program 2 times [2022-11-20 21:06:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:56,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144153552] [2022-11-20 21:06:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 52 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:06:57,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:57,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144153552] [2022-11-20 21:06:57,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144153552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:06:57,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417768947] [2022-11-20 21:06:57,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:06:57,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:06:57,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:57,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:06:57,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 21:06:57,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 21:06:57,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:06:57,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 21:06:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:06:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 21:06:57,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:06:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 53 proven. 5 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 21:06:58,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417768947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:06:58,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222169955] [2022-11-20 21:06:58,107 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-20 21:06:58,107 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:06:58,108 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:06:58,108 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:06:58,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:07:01,733 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 125 for LOIs [2022-11-20 21:07:01,753 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 44 for LOIs [2022-11-20 21:07:02,086 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-20 21:07:02,339 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-20 21:07:02,341 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 29 for LOIs [2022-11-20 21:07:02,344 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:07:09,658 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14056#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483647) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~3#1|) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483648)) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (<= 1 ~systemActive~0) (<= |#NULL.offset| 0) (<= ~methaneLevelCritical~0 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~3#1|) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (<= 0 ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= ~head~0.base 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 21:07:09,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:07:09,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:07:09,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 10] total 35 [2022-11-20 21:07:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967539808] [2022-11-20 21:07:09,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:07:09,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 21:07:09,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:07:09,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 21:07:09,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=3578, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 21:07:09,663 INFO L87 Difference]: Start difference. First operand 605 states and 721 transitions. Second operand has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 32 states have internal predecessors, (161), 13 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-20 21:07:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:11,014 INFO L93 Difference]: Finished difference Result 699 states and 834 transitions. [2022-11-20 21:07:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 21:07:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 32 states have internal predecessors, (161), 13 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) Word has length 94 [2022-11-20 21:07:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:11,016 INFO L225 Difference]: With dead ends: 699 [2022-11-20 21:07:11,016 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:07:11,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 239 SyntacticMatches, 8 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3477 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1010, Invalid=6822, Unknown=0, NotChecked=0, Total=7832 [2022-11-20 21:07:11,020 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 555 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:11,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 341 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 21:07:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:07:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:07:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:07:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:07:11,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2022-11-20 21:07:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:07:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 32 states have internal predecessors, (161), 13 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-20 21:07:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:07:11,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:07:11,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:07:11,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 21:07:11,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:07:15,225 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 309 316) the Hoare annotation is: (= ~pumpRunning~0 |old(~pumpRunning~0)|) [2022-11-20 21:07:15,225 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 309 316) no Hoare annotation was computed. [2022-11-20 21:07:15,226 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 224 230) no Hoare annotation was computed. [2022-11-20 21:07:15,226 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 224 230) the Hoare annotation is: true [2022-11-20 21:07:15,226 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 549 560) the Hoare annotation is: true [2022-11-20 21:07:15,226 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 549 560) no Hoare annotation was computed. [2022-11-20 21:07:15,226 INFO L899 garLoopResultBuilder]: For program point L449(line 449) no Hoare annotation was computed. [2022-11-20 21:07:15,226 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 428 457) no Hoare annotation was computed. [2022-11-20 21:07:15,227 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 428 457) the Hoare annotation is: true [2022-11-20 21:07:15,227 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 446) no Hoare annotation was computed. [2022-11-20 21:07:15,227 INFO L902 garLoopResultBuilder]: At program point L442-1(lines 442 446) the Hoare annotation is: true [2022-11-20 21:07:15,227 INFO L902 garLoopResultBuilder]: At program point L438-2(lines 438 452) the Hoare annotation is: true [2022-11-20 21:07:15,227 INFO L902 garLoopResultBuilder]: At program point L434(line 434) the Hoare annotation is: true [2022-11-20 21:07:15,227 INFO L899 garLoopResultBuilder]: For program point L434-1(line 434) no Hoare annotation was computed. [2022-11-20 21:07:15,227 INFO L902 garLoopResultBuilder]: At program point L453(lines 428 457) the Hoare annotation is: true [2022-11-20 21:07:15,228 INFO L895 garLoopResultBuilder]: At program point L630(line 630) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-20 21:07:15,228 INFO L895 garLoopResultBuilder]: At program point L272(line 272) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-20 21:07:15,228 INFO L895 garLoopResultBuilder]: At program point L268(line 268) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (= |old(~pumpRunning~0)| 0)))) (and (or (and (not (= ~pumpRunning~0 0)) (<= 1 |timeShift_processEnvironment_~tmp~3#1|) (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse3 .cse0 .cse1 .cse2) (or .cse3 (not (= 0 ~systemActive~0))))) [2022-11-20 21:07:15,228 INFO L899 garLoopResultBuilder]: For program point L103(lines 103 109) no Hoare annotation was computed. [2022-11-20 21:07:15,229 INFO L895 garLoopResultBuilder]: At program point L99(lines 99 112) the Hoare annotation is: (let ((.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse8 (not (= 0 ~systemActive~0))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse3 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| ~waterLevel~0)) (.cse2 (= ~waterLevel~0 1))) (and (or (and .cse0 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse1 .cse2) .cse3 (and .cse4 .cse1) .cse5 .cse6) (or .cse7 (and .cse0 .cse4) .cse8) (or .cse7 .cse9 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 1) .cse8) (or .cse7 .cse3 .cse4 .cse5 .cse6) (or .cse7 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1|) .cse8 .cse6) (or .cse7 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (not (= |old(~waterLevel~0)| 0)) .cse8) (or .cse7 .cse9 .cse3 (and .cse0 .cse1 .cse2)))) [2022-11-20 21:07:15,229 INFO L895 garLoopResultBuilder]: At program point L99-1(lines 91 115) the Hoare annotation is: (let ((.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse3 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| ~waterLevel~0)) (.cse2 (= ~waterLevel~0 1)) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (not (= 0 ~systemActive~0)))) (and (or (and .cse0 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse1 .cse2) .cse3 (and .cse4 .cse1) .cse5 .cse6) (or .cse7 (and .cse0 .cse4) .cse8) (or .cse7 .cse9 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 1) .cse8) (or .cse7 .cse3 .cse4 .cse5 .cse6) (or .cse7 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1|) .cse8 .cse6) (or .cse7 .cse9 .cse3 (and .cse0 .cse1 .cse2)) (or .cse7 (not (= |old(~waterLevel~0)| 0)) .cse8 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0))))) [2022-11-20 21:07:15,230 INFO L895 garLoopResultBuilder]: At program point L277(line 277) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or (and .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-20 21:07:15,230 INFO L895 garLoopResultBuilder]: At program point L277-1(lines 258 282) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse1 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (and .cse1 .cse2 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse1 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse2 .cse3)) (or .cse1 (not (= 0 ~systemActive~0))))) [2022-11-20 21:07:15,230 INFO L895 garLoopResultBuilder]: At program point L211-1(lines 211 217) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= ~waterLevel~0 1))) (and (or .cse0 (and .cse1 .cse2) (not (= 0 ~systemActive~0))) (or .cse3 .cse2 (and .cse0 .cse1 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse4) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 .cse4)))) [2022-11-20 21:07:15,231 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 200 223) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (= 0 ~systemActive~0)))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= 1 ~systemActive~0))) (.cse5 (and .cse1 .cse2 .cse3))) (and (or .cse0 (and .cse1 .cse2) .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse4 .cse5) (or .cse4 .cse5 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-20 21:07:15,231 INFO L899 garLoopResultBuilder]: For program point L204-1(lines 203 222) no Hoare annotation was computed. [2022-11-20 21:07:15,231 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 200 223) no Hoare annotation was computed. [2022-11-20 21:07:15,231 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 274) no Hoare annotation was computed. [2022-11-20 21:07:15,232 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2022-11-20 21:07:15,232 INFO L895 garLoopResultBuilder]: At program point L262(lines 262 279) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse4 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse1 (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|)) (or .cse2 .cse3) (or (not .cse1) (<= 2 ~waterLevel~0)) (or .cse4 .cse2))) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 .cse3)) (or .cse4 (not (= 0 ~systemActive~0))))) [2022-11-20 21:07:15,232 INFO L899 garLoopResultBuilder]: For program point L415(lines 415 421) no Hoare annotation was computed. [2022-11-20 21:07:15,232 INFO L895 garLoopResultBuilder]: At program point L415-1(lines 415 421) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-20 21:07:15,232 INFO L895 garLoopResultBuilder]: At program point L180(lines 131 181) the Hoare annotation is: false [2022-11-20 21:07:15,233 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 174) no Hoare annotation was computed. [2022-11-20 21:07:15,233 INFO L895 garLoopResultBuilder]: At program point L168-2(lines 162 175) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0))) (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (not .cse4)) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2022-11-20 21:07:15,233 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 21:07:15,233 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 158) no Hoare annotation was computed. [2022-11-20 21:07:15,233 INFO L899 garLoopResultBuilder]: For program point L152-1(lines 152 158) no Hoare annotation was computed. [2022-11-20 21:07:15,234 INFO L895 garLoopResultBuilder]: At program point L177(lines 132 179) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0))) (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (not .cse4)) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2022-11-20 21:07:15,234 INFO L895 garLoopResultBuilder]: At program point L144(line 144) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (= 0 ~systemActive~0)))) [2022-11-20 21:07:15,234 INFO L895 garLoopResultBuilder]: At program point L417(line 417) the Hoare annotation is: (and (or (not (= ~pumpRunning~0 0)) (= |old(~waterLevel~0)| 1) (and (not (= ~waterLevel~0 1)) (not (= ~waterLevel~0 0))) (= |old(~waterLevel~0)| 0)) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-20 21:07:15,234 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 21:07:15,234 INFO L899 garLoopResultBuilder]: For program point L133(lines 132 179) no Hoare annotation was computed. [2022-11-20 21:07:15,235 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 175) no Hoare annotation was computed. [2022-11-20 21:07:15,235 INFO L895 garLoopResultBuilder]: At program point L509(lines 509 516) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~7#1| ~systemActive~0)) [2022-11-20 21:07:15,235 INFO L902 garLoopResultBuilder]: At program point L509-2(lines 509 516) the Hoare annotation is: true [2022-11-20 21:07:15,235 INFO L895 garLoopResultBuilder]: At program point L154(line 154) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (= 0 ~systemActive~0)))) [2022-11-20 21:07:15,235 INFO L902 garLoopResultBuilder]: At program point L183(lines 122 187) the Hoare annotation is: true [2022-11-20 21:07:15,235 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 148) no Hoare annotation was computed. [2022-11-20 21:07:15,236 INFO L899 garLoopResultBuilder]: For program point L142-1(lines 142 148) no Hoare annotation was computed. [2022-11-20 21:07:15,236 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 232 256) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2022-11-20 21:07:15,236 INFO L895 garLoopResultBuilder]: At program point L246(line 246) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2022-11-20 21:07:15,236 INFO L895 garLoopResultBuilder]: At program point L240(lines 240 248) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 1))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2022-11-20 21:07:15,236 INFO L895 garLoopResultBuilder]: At program point L236(lines 236 253) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2022-11-20 21:07:15,237 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 232 256) no Hoare annotation was computed. [2022-11-20 21:07:15,237 INFO L895 garLoopResultBuilder]: At program point L251(line 251) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2022-11-20 21:07:15,237 INFO L899 garLoopResultBuilder]: For program point L251-1(lines 232 256) no Hoare annotation was computed. [2022-11-20 21:07:15,237 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 537 548) no Hoare annotation was computed. [2022-11-20 21:07:15,237 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 537 548) the Hoare annotation is: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= ~pumpRunning~0 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 0 ~systemActive~0))) (or .cse2 .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2 (= ~waterLevel~0 1)))) [2022-11-20 21:07:15,241 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:15,243 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:07:15,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:07:15 BoogieIcfgContainer [2022-11-20 21:07:15,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:07:15,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:07:15,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:07:15,267 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:07:15,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:06:24" (3/4) ... [2022-11-20 21:07:15,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:07:15,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-20 21:07:15,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 21:07:15,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 21:07:15,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 21:07:15,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 21:07:15,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 21:07:15,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 21:07:15,284 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2022-11-20 21:07:15,284 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 21:07:15,285 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 21:07:15,285 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:07:15,286 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:07:15,311 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive)))) && (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-20 21:07:15,312 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && ((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) [2022-11-20 21:07:15,312 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || ((((pumpRunning == 0 || waterLevel + 1 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && (!(pumpRunning == 0) || 2 <= waterLevel)) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-20 21:07:15,312 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-20 21:07:15,313 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) [2022-11-20 21:07:15,314 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1)) [2022-11-20 21:07:15,314 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive)) || (tmp___0 == 0 && tmp == 0)) [2022-11-20 21:07:15,314 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-20 21:07:15,315 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (pumpRunning == 0 && tmp == 1)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) [2022-11-20 21:07:15,346 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:07:15,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:07:15,347 INFO L158 Benchmark]: Toolchain (without parser) took 52533.82ms. Allocated memory was 163.6MB in the beginning and 648.0MB in the end (delta: 484.4MB). Free memory was 132.0MB in the beginning and 535.6MB in the end (delta: -403.5MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. [2022-11-20 21:07:15,347 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:07:15,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.10ms. Allocated memory is still 163.6MB. Free memory was 132.0MB in the beginning and 113.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 21:07:15,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.75ms. Allocated memory is still 163.6MB. Free memory was 112.5MB in the beginning and 110.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:07:15,349 INFO L158 Benchmark]: Boogie Preprocessor took 28.87ms. Allocated memory is still 163.6MB. Free memory was 110.4MB in the beginning and 109.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:07:15,349 INFO L158 Benchmark]: RCFGBuilder took 740.25ms. Allocated memory is still 163.6MB. Free memory was 109.0MB in the beginning and 83.1MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 21:07:15,350 INFO L158 Benchmark]: TraceAbstraction took 51103.32ms. Allocated memory was 163.6MB in the beginning and 648.0MB in the end (delta: 484.4MB). Free memory was 82.4MB in the beginning and 540.8MB in the end (delta: -458.4MB). Peak memory consumption was 344.1MB. Max. memory is 16.1GB. [2022-11-20 21:07:15,350 INFO L158 Benchmark]: Witness Printer took 79.86ms. Allocated memory is still 648.0MB. Free memory was 540.8MB in the beginning and 535.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 21:07:15,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.10ms. Allocated memory is still 163.6MB. Free memory was 132.0MB in the beginning and 113.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.75ms. Allocated memory is still 163.6MB. Free memory was 112.5MB in the beginning and 110.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.87ms. Allocated memory is still 163.6MB. Free memory was 110.4MB in the beginning and 109.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 740.25ms. Allocated memory is still 163.6MB. Free memory was 109.0MB in the beginning and 83.1MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 51103.32ms. Allocated memory was 163.6MB in the beginning and 648.0MB in the end (delta: 484.4MB). Free memory was 82.4MB in the beginning and 540.8MB in the end (delta: -458.4MB). Peak memory consumption was 344.1MB. Max. memory is 16.1GB. * Witness Printer took 79.86ms. Allocated memory is still 648.0MB. Free memory was 540.8MB in the beginning and 535.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 630]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.0s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2848 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2806 mSDsluCounter, 3170 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2439 mSDsCounter, 1297 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4420 IncrementalHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1297 mSolverCounterUnsat, 731 mSDtfsCounter, 4420 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1161 GetRequests, 798 SyntacticMatches, 8 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10891 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=605occurred in iteration=11, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 385 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 1245 PreInvPairs, 1406 NumberOfFragments, 1169 HoareAnnotationTreeSize, 1245 FomulaSimplifications, 12809 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 35 FomulaSimplificationsInter, 27225 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 959 NumberOfCodeBlocks, 847 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1171 ConstructedInterpolants, 0 QuantifiedInterpolants, 4871 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1485 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 746/1007 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 415]: Loop Invariant Derived loop invariant: pumpRunning == 0 && splverifierCounter == 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1)) - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: ((((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) && !(0 == systemActive)) || ((((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) && !(0 == systemActive))) || ((pumpRunning == 0 && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive)))) && (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && ((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) - InvariantResult [Line: 236]: Loop Invariant Derived loop invariant: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) - InvariantResult [Line: 630]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || ((((pumpRunning == 0 || waterLevel + 1 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && (!(pumpRunning == 0) || 2 <= waterLevel)) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive)) || (tmp___0 == 0 && tmp == 0)) - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 428]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 509]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 509]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && 1 == systemActive) && waterLevel == 1) && tmp == systemActive - InvariantResult [Line: 438]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 240]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (pumpRunning == 0 && tmp == 1)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) RESULT: Ultimate proved your program to be correct! [2022-11-20 21:07:15,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c660045-68a3-4637-b40c-22204e7463fb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE