./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/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_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/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_d5c395ce-47db-430a-8b01-b9adc2109079/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 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f --- 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 19:46:50,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:46:50,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:46:50,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:46:50,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:46:50,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:46:50,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:46:50,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:46:50,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:46:50,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:46:50,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:46:50,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:46:50,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:46:50,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:46:50,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:46:50,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:46:50,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:46:50,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:46:50,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:46:50,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:46:50,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:46:50,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:46:50,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:46:50,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:46:50,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:46:50,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:46:50,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:46:50,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:46:50,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:46:50,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:46:50,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:46:50,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:46:50,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:46:50,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:46:50,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:46:50,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:46:50,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:46:50,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:46:50,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:46:50,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:46:50,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:46:50,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:46:50,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:46:50,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:46:50,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:46:50,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:46:50,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:46:50,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:46:50,715 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:46:50,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:46:50,716 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:46:50,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:46:50,717 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:46:50,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:46:50,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:46:50,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:46:50,718 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:46:50,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:46:50,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:46:50,719 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:46:50,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:46:50,721 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:46:50,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:46:50,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:46:50,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:46:50,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:46:50,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:46:50,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:46:50,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:46:50,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:46:50,723 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:46:50,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:46:50,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:46:50,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:46:50,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:50,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:46:50,725 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:46:50,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:46:50,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:46:50,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:46:50,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:46:50,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:46:50,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:46:50,728 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_d5c395ce-47db-430a-8b01-b9adc2109079/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f [2022-11-20 19:46:51,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:46:51,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:46:51,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:46:51,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:46:51,059 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:46:51,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2022-11-20 19:46:54,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:46:54,335 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:46:54,336 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2022-11-20 19:46:54,346 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/data/8ab81a36b/fc26ef72bfaa4b19929a2a303a162a6d/FLAGfb3d323e7 [2022-11-20 19:46:54,371 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/data/8ab81a36b/fc26ef72bfaa4b19929a2a303a162a6d [2022-11-20 19:46:54,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:46:54,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:46:54,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:54,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:46:54,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:46:54,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceffe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54, skipping insertion in model container [2022-11-20 19:46:54,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:46:54,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:46:54,587 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_d5c395ce-47db-430a-8b01-b9adc2109079/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2022-11-20 19:46:54,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:54,744 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:46:54,754 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_d5c395ce-47db-430a-8b01-b9adc2109079/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2022-11-20 19:46:54,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:54,820 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:46:54,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54 WrapperNode [2022-11-20 19:46:54,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:54,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:54,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:46:54,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:46:54,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,868 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 236 [2022-11-20 19:46:54,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:54,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:46:54,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:46:54,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:46:54,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:46:54,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:46:54,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:46:54,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:46:54,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (1/1) ... [2022-11-20 19:46:54,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:54,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:46:54,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:46:54,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:46:55,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:46:55,001 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 19:46:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 19:46:55,001 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 19:46:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 19:46:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 19:46:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 19:46:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 19:46:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 19:46:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 19:46:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 19:46:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 19:46:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 19:46:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-20 19:46:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-20 19:46:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-20 19:46:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-20 19:46:55,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:46:55,004 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 19:46:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 19:46:55,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:46:55,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:46:55,091 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:46:55,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:46:55,429 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:46:55,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:46:55,545 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 19:46:55,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:55 BoogieIcfgContainer [2022-11-20 19:46:55,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:46:55,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:46:55,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:46:55,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:46:55,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:46:54" (1/3) ... [2022-11-20 19:46:55,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abaf44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:55, skipping insertion in model container [2022-11-20 19:46:55,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:54" (2/3) ... [2022-11-20 19:46:55,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abaf44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:55, skipping insertion in model container [2022-11-20 19:46:55,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:55" (3/3) ... [2022-11-20 19:46:55,558 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2022-11-20 19:46:55,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:46:55,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:46:55,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:46:55,635 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;@56efa329, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:46:55,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:46:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 19:46:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 19:46:55,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:55,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:55,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash 712513712, now seen corresponding path program 1 times [2022-11-20 19:46:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:55,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633823538] [2022-11-20 19:46:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:55,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:55,834 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 19:46:55,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:55,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633823538] [2022-11-20 19:46:55,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633823538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:55,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:55,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:46:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382305441] [2022-11-20 19:46:55,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:46:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:46:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:46:55,873 INFO L87 Difference]: Start difference. First operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) 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 19:46:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:55,942 INFO L93 Difference]: Finished difference Result 134 states and 181 transitions. [2022-11-20 19:46:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:46:55,948 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 19:46:55,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:55,960 INFO L225 Difference]: With dead ends: 134 [2022-11-20 19:46:55,960 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 19:46:55,964 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 19:46:55,971 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:55,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 19:46:56,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-20 19:46:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 47 states have internal predecessors, (50), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 19:46:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2022-11-20 19:46:56,033 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 12 [2022-11-20 19:46:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:56,033 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2022-11-20 19:46:56,034 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 19:46:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2022-11-20 19:46:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 19:46:56,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:56,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:56,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:46:56,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:56,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash 987824052, now seen corresponding path program 1 times [2022-11-20 19:46:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:56,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880210308] [2022-11-20 19:46:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:56,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:56,146 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 19:46:56,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:56,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880210308] [2022-11-20 19:46:56,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880210308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:56,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:56,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:46:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583025950] [2022-11-20 19:46:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:56,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:56,166 INFO L87 Difference]: Start difference. First operand 63 states and 81 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 19:46:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:56,222 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2022-11-20 19:46:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:56,222 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 19:46:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:56,224 INFO L225 Difference]: With dead ends: 103 [2022-11-20 19:46:56,224 INFO L226 Difference]: Without dead ends: 55 [2022-11-20 19:46:56,225 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 19:46:56,226 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:56,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-20 19:46:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-20 19:46:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 42 states have internal predecessors, (44), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 19:46:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-11-20 19:46:56,235 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 13 [2022-11-20 19:46:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:56,236 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-11-20 19:46:56,236 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 19:46:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-11-20 19:46:56,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 19:46:56,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:56,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:56,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:46:56,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:56,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1857867065, now seen corresponding path program 1 times [2022-11-20 19:46:56,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:56,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467162009] [2022-11-20 19:46:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:56,485 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 19:46:56,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:56,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467162009] [2022-11-20 19:46:56,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467162009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:56,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:56,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:46:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117270837] [2022-11-20 19:46:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:56,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:46:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:46:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:56,488 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 19:46:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:56,581 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2022-11-20 19:46:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:46:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2022-11-20 19:46:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:56,583 INFO L225 Difference]: With dead ends: 108 [2022-11-20 19:46:56,584 INFO L226 Difference]: Without dead ends: 55 [2022-11-20 19:46:56,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:46:56,586 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 65 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:56,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 71 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-20 19:46:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-20 19:46:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.303030303030303) internal successors, (43), 42 states have internal predecessors, (43), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 19:46:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2022-11-20 19:46:56,597 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 15 [2022-11-20 19:46:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:56,600 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2022-11-20 19:46:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 19:46:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2022-11-20 19:46:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 19:46:56,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:56,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:46:56,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -561703335, now seen corresponding path program 1 times [2022-11-20 19:46:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:56,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728556415] [2022-11-20 19:46:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:56,742 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 19:46:56,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:56,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728556415] [2022-11-20 19:46:56,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728556415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:56,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:56,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:46:56,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389703478] [2022-11-20 19:46:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:56,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:56,745 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:46:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:56,808 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2022-11-20 19:46:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:56,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-20 19:46:56,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:56,811 INFO L225 Difference]: With dead ends: 144 [2022-11-20 19:46:56,811 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 19:46:56,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:46:56,813 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 41 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:56,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 97 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:46:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 19:46:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-20 19:46:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 65 states have internal predecessors, (71), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (22), 14 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-20 19:46:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2022-11-20 19:46:56,832 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 25 [2022-11-20 19:46:56,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:56,832 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2022-11-20 19:46:56,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 19:46:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2022-11-20 19:46:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 19:46:56,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:56,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:56,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:46:56,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1584101162, now seen corresponding path program 1 times [2022-11-20 19:46:56,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097592288] [2022-11-20 19:46:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:57,074 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 19:46:57,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:57,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097592288] [2022-11-20 19:46:57,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097592288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:57,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:57,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:46:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789820227] [2022-11-20 19:46:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:57,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:46:57,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:57,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:46:57,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:46:57,086 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 19:46:57,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:57,274 INFO L93 Difference]: Finished difference Result 250 states and 310 transitions. [2022-11-20 19:46:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:46:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-20 19:46:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:57,277 INFO L225 Difference]: With dead ends: 250 [2022-11-20 19:46:57,277 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 19:46:57,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:46:57,280 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 80 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:57,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 186 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 19:46:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2022-11-20 19:46:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 97 states have internal predecessors, (104), 22 states have call successors, (22), 21 states have call predecessors, (22), 24 states have return successors, (31), 22 states have call predecessors, (31), 22 states have call successors, (31) [2022-11-20 19:46:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2022-11-20 19:46:57,313 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 31 [2022-11-20 19:46:57,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:57,314 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2022-11-20 19:46:57,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 19:46:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2022-11-20 19:46:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 19:46:57,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:57,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:46:57,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash -657528160, now seen corresponding path program 1 times [2022-11-20 19:46:57,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:57,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923346749] [2022-11-20 19:46:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:57,574 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 19:46:57,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:57,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923346749] [2022-11-20 19:46:57,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923346749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:57,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:57,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 19:46:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364205346] [2022-11-20 19:46:57,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:57,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:46:57,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:46:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:46:57,577 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 19:46:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:58,197 INFO L93 Difference]: Finished difference Result 330 states and 409 transitions. [2022-11-20 19:46:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:46:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-11-20 19:46:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:58,203 INFO L225 Difference]: With dead ends: 330 [2022-11-20 19:46:58,203 INFO L226 Difference]: Without dead ends: 243 [2022-11-20 19:46:58,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:46:58,214 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 155 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:58,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 295 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:46:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-20 19:46:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2022-11-20 19:46:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 141 states have (on average 1.198581560283688) internal successors, (169), 158 states have internal predecessors, (169), 36 states have call successors, (36), 31 states have call predecessors, (36), 38 states have return successors, (51), 37 states have call predecessors, (51), 36 states have call successors, (51) [2022-11-20 19:46:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2022-11-20 19:46:58,258 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 34 [2022-11-20 19:46:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:58,259 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2022-11-20 19:46:58,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 19:46:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2022-11-20 19:46:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 19:46:58,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:58,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 19:46:58,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash 522110395, now seen corresponding path program 1 times [2022-11-20 19:46:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:58,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75086291] [2022-11-20 19:46:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 19:46:58,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75086291] [2022-11-20 19:46:58,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75086291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:58,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:58,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:46:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610438689] [2022-11-20 19:46:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:58,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:46:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:46:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:46:58,372 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 19:46:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:58,578 INFO L93 Difference]: Finished difference Result 569 states and 690 transitions. [2022-11-20 19:46:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:46:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55 [2022-11-20 19:46:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:58,582 INFO L225 Difference]: With dead ends: 569 [2022-11-20 19:46:58,582 INFO L226 Difference]: Without dead ends: 475 [2022-11-20 19:46:58,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:46:58,583 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:58,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-20 19:46:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 435. [2022-11-20 19:46:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 294 states have (on average 1.2108843537414966) internal successors, (356), 320 states have internal predecessors, (356), 65 states have call successors, (65), 57 states have call predecessors, (65), 75 states have return successors, (99), 73 states have call predecessors, (99), 65 states have call successors, (99) [2022-11-20 19:46:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 520 transitions. [2022-11-20 19:46:58,642 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 520 transitions. Word has length 55 [2022-11-20 19:46:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:58,643 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 520 transitions. [2022-11-20 19:46:58,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 19:46:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 520 transitions. [2022-11-20 19:46:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 19:46:58,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:58,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 19:46:58,647 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 493154562, now seen corresponding path program 1 times [2022-11-20 19:46:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:58,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221639883] [2022-11-20 19:46:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:46:59,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221639883] [2022-11-20 19:46:59,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221639883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:59,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:59,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 19:46:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969434421] [2022-11-20 19:46:59,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 19:46:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 19:46:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:46:59,046 INFO L87 Difference]: Start difference. First operand 435 states and 520 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 19:46:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:59,617 INFO L93 Difference]: Finished difference Result 793 states and 984 transitions. [2022-11-20 19:46:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:46:59,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 58 [2022-11-20 19:46:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:59,621 INFO L225 Difference]: With dead ends: 793 [2022-11-20 19:46:59,621 INFO L226 Difference]: Without dead ends: 578 [2022-11-20 19:46:59,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-20 19:46:59,623 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 133 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:59,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 211 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:46:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-20 19:46:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 523. [2022-11-20 19:46:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 356 states have (on average 1.2387640449438202) internal successors, (441), 388 states have internal predecessors, (441), 77 states have call successors, (77), 63 states have call predecessors, (77), 89 states have return successors, (133), 88 states have call predecessors, (133), 77 states have call successors, (133) [2022-11-20 19:46:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 651 transitions. [2022-11-20 19:46:59,703 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 651 transitions. Word has length 58 [2022-11-20 19:46:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:59,704 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 651 transitions. [2022-11-20 19:46:59,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 19:46:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 651 transitions. [2022-11-20 19:46:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 19:46:59,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:59,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:59,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 19:46:59,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash 600507340, now seen corresponding path program 1 times [2022-11-20 19:46:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:59,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857806608] [2022-11-20 19:46:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:59,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:47:00,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857806608] [2022-11-20 19:47:00,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857806608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:47:00,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604098837] [2022-11-20 19:47:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:00,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:00,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:00,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:47:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:00,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 19:47:00,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 19:47:00,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:47:01,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604098837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:01,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439855484] [2022-11-20 19:47:01,363 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-20 19:47:01,364 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:01,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:01,372 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:01,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:07,308 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 139 for LOIs [2022-11-20 19:47:07,340 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-20 19:47:07,698 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 49 for LOIs [2022-11-20 19:47:07,863 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 49 for LOIs [2022-11-20 19:47:08,113 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 40 for LOIs [2022-11-20 19:47:08,119 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 43 for LOIs [2022-11-20 19:47:08,127 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 26 for LOIs [2022-11-20 19:47:08,129 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:47:15,357 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6828#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 1) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 1 ~systemActive~0) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 19:47:15,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:47:15,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:47:15,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 27 [2022-11-20 19:47:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571134067] [2022-11-20 19:47:15,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:47:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 19:47:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 19:47:15,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=3372, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 19:47:15,361 INFO L87 Difference]: Start difference. First operand 523 states and 651 transitions. Second operand has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-20 19:47:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:18,383 INFO L93 Difference]: Finished difference Result 1465 states and 1896 transitions. [2022-11-20 19:47:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 19:47:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) Word has length 61 [2022-11-20 19:47:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:18,390 INFO L225 Difference]: With dead ends: 1465 [2022-11-20 19:47:18,391 INFO L226 Difference]: Without dead ends: 1144 [2022-11-20 19:47:18,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1201, Invalid=9101, Unknown=0, NotChecked=0, Total=10302 [2022-11-20 19:47:18,397 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1217 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:18,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 376 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 19:47:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2022-11-20 19:47:18,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 971. [2022-11-20 19:47:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 668 states have (on average 1.2035928143712575) internal successors, (804), 720 states have internal predecessors, (804), 135 states have call successors, (135), 109 states have call predecessors, (135), 167 states have return successors, (253), 167 states have call predecessors, (253), 135 states have call successors, (253) [2022-11-20 19:47:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1192 transitions. [2022-11-20 19:47:18,539 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1192 transitions. Word has length 61 [2022-11-20 19:47:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:18,539 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1192 transitions. [2022-11-20 19:47:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-20 19:47:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1192 transitions. [2022-11-20 19:47:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 19:47:18,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:18,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:18,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:18,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:18,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:18,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2143371024, now seen corresponding path program 1 times [2022-11-20 19:47:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:18,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935688569] [2022-11-20 19:47:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 19:47:18,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:18,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935688569] [2022-11-20 19:47:18,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935688569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:18,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:18,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:47:18,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453463103] [2022-11-20 19:47:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:47:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:47:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:18,943 INFO L87 Difference]: Start difference. First operand 971 states and 1192 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 19:47:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:19,124 INFO L93 Difference]: Finished difference Result 1029 states and 1269 transitions. [2022-11-20 19:47:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:47:19,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 95 [2022-11-20 19:47:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:19,131 INFO L225 Difference]: With dead ends: 1029 [2022-11-20 19:47:19,131 INFO L226 Difference]: Without dead ends: 1027 [2022-11-20 19:47:19,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:47:19,133 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 49 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:19,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 156 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:19,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-20 19:47:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 971. [2022-11-20 19:47:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 668 states have (on average 1.1826347305389222) internal successors, (790), 720 states have internal predecessors, (790), 135 states have call successors, (135), 109 states have call predecessors, (135), 167 states have return successors, (253), 167 states have call predecessors, (253), 135 states have call successors, (253) [2022-11-20 19:47:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1178 transitions. [2022-11-20 19:47:19,261 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1178 transitions. Word has length 95 [2022-11-20 19:47:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:19,262 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1178 transitions. [2022-11-20 19:47:19,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 19:47:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1178 transitions. [2022-11-20 19:47:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 19:47:19,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:19,265 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:47:19,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 19:47:19,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:19,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1850745064, now seen corresponding path program 1 times [2022-11-20 19:47:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:19,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737468214] [2022-11-20 19:47:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:19,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 41 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:47:19,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737468214] [2022-11-20 19:47:19,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737468214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:47:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506377495] [2022-11-20 19:47:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:19,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:19,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:19,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:47:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 19:47:19,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 19:47:19,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:19,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506377495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:19,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:47:19,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 9 [2022-11-20 19:47:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774986619] [2022-11-20 19:47:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:47:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:47:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:47:19,820 INFO L87 Difference]: Start difference. First operand 971 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 19:47:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:20,067 INFO L93 Difference]: Finished difference Result 1679 states and 2078 transitions. [2022-11-20 19:47:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:47:20,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 99 [2022-11-20 19:47:20,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:20,072 INFO L225 Difference]: With dead ends: 1679 [2022-11-20 19:47:20,072 INFO L226 Difference]: Without dead ends: 944 [2022-11-20 19:47:20,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:47:20,076 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:20,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-20 19:47:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 892. [2022-11-20 19:47:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 608 states have (on average 1.15625) internal successors, (703), 655 states have internal predecessors, (703), 130 states have call successors, (130), 109 states have call predecessors, (130), 153 states have return successors, (198), 153 states have call predecessors, (198), 130 states have call successors, (198) [2022-11-20 19:47:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1031 transitions. [2022-11-20 19:47:20,189 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1031 transitions. Word has length 99 [2022-11-20 19:47:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:20,190 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1031 transitions. [2022-11-20 19:47:20,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 19:47:20,190 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1031 transitions. [2022-11-20 19:47:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 19:47:20,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:20,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:20,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 19:47:20,399 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2048533630, now seen corresponding path program 2 times [2022-11-20 19:47:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:20,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799115278] [2022-11-20 19:47:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 19:47:21,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:21,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799115278] [2022-11-20 19:47:21,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799115278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:47:21,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200988679] [2022-11-20 19:47:21,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:47:21,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:21,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:21,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:47:21,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 19:47:21,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:47:21,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 19:47:21,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:47:21,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:21,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200988679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:21,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:47:21,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 17 [2022-11-20 19:47:21,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900119806] [2022-11-20 19:47:21,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:21,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:47:21,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:47:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-20 19:47:21,367 INFO L87 Difference]: Start difference. First operand 892 states and 1031 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 19:47:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:21,647 INFO L93 Difference]: Finished difference Result 1758 states and 2082 transitions. [2022-11-20 19:47:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:47:21,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 103 [2022-11-20 19:47:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:21,653 INFO L225 Difference]: With dead ends: 1758 [2022-11-20 19:47:21,654 INFO L226 Difference]: Without dead ends: 1066 [2022-11-20 19:47:21,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-20 19:47:21,657 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 56 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:21,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 309 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-20 19:47:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1020. [2022-11-20 19:47:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 697 states have (on average 1.1477761836441893) internal successors, (800), 752 states have internal predecessors, (800), 152 states have call successors, (152), 124 states have call predecessors, (152), 170 states have return successors, (228), 169 states have call predecessors, (228), 152 states have call successors, (228) [2022-11-20 19:47:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1180 transitions. [2022-11-20 19:47:21,792 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1180 transitions. Word has length 103 [2022-11-20 19:47:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:21,793 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1180 transitions. [2022-11-20 19:47:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 19:47:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1180 transitions. [2022-11-20 19:47:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 19:47:21,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:21,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:21,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:22,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 19:47:22,001 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1808422920, now seen corresponding path program 2 times [2022-11-20 19:47:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:22,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66278901] [2022-11-20 19:47:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:22,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 23 proven. 90 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 19:47:23,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:23,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66278901] [2022-11-20 19:47:23,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66278901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:47:23,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313727848] [2022-11-20 19:47:23,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:47:23,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:23,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:23,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:23,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:47:23,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 19:47:23,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:47:23,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 19:47:23,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-20 19:47:23,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:23,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313727848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:23,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:47:23,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [28] total 32 [2022-11-20 19:47:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879944514] [2022-11-20 19:47:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:23,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:47:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:23,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:47:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-11-20 19:47:23,995 INFO L87 Difference]: Start difference. First operand 1020 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 19:47:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:24,259 INFO L93 Difference]: Finished difference Result 1760 states and 2036 transitions. [2022-11-20 19:47:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:47:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2022-11-20 19:47:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:24,265 INFO L225 Difference]: With dead ends: 1760 [2022-11-20 19:47:24,265 INFO L226 Difference]: Without dead ends: 944 [2022-11-20 19:47:24,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:47:24,269 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 29 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:24,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 290 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:24,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-20 19:47:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 944. [2022-11-20 19:47:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 644 states have (on average 1.1366459627329193) internal successors, (732), 693 states have internal predecessors, (732), 140 states have call successors, (140), 119 states have call predecessors, (140), 159 states have return successors, (202), 156 states have call predecessors, (202), 140 states have call successors, (202) [2022-11-20 19:47:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1074 transitions. [2022-11-20 19:47:24,392 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1074 transitions. Word has length 121 [2022-11-20 19:47:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:24,393 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1074 transitions. [2022-11-20 19:47:24,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 19:47:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1074 transitions. [2022-11-20 19:47:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 19:47:24,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:24,399 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:24,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 19:47:24,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 19:47:24,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:47:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1601086830, now seen corresponding path program 2 times [2022-11-20 19:47:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:24,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977160599] [2022-11-20 19:47:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 52 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 19:47:25,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:25,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977160599] [2022-11-20 19:47:25,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977160599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:47:25,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646049500] [2022-11-20 19:47:25,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:47:25,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:25,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:25,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:25,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 19:47:25,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 19:47:25,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:47:25,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 19:47:25,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 76 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 19:47:25,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 7 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-20 19:47:25,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646049500] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:25,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387158461] [2022-11-20 19:47:25,958 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-20 19:47:25,959 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:25,960 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:25,961 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:25,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:28,435 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 23 for LOIs [2022-11-20 19:47:28,438 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-20 19:47:28,722 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 38 for LOIs [2022-11-20 19:47:28,865 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2022-11-20 19:47:29,065 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 48 for LOIs [2022-11-20 19:47:29,076 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-20 19:47:29,079 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2022-11-20 19:47:29,081 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 48 for LOIs [2022-11-20 19:47:29,087 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:47:35,115 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28287#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 19:47:35,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:47:35,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:47:35,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 21 [2022-11-20 19:47:35,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282913248] [2022-11-20 19:47:35,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 19:47:35,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 19:47:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 19:47:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3007, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 19:47:35,118 INFO L87 Difference]: Start difference. First operand 944 states and 1074 transitions. Second operand has 21 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 9 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (32), 10 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 19:47:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:37,565 INFO L93 Difference]: Finished difference Result 1956 states and 2325 transitions. [2022-11-20 19:47:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 19:47:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 9 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (32), 10 states have call predecessors, (32), 8 states have call successors, (32) Word has length 125 [2022-11-20 19:47:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:37,566 INFO L225 Difference]: With dead ends: 1956 [2022-11-20 19:47:37,566 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 19:47:37,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 321 SyntacticMatches, 23 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4085 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=872, Invalid=8830, Unknown=0, NotChecked=0, Total=9702 [2022-11-20 19:47:37,574 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 789 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:37,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 238 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 19:47:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 19:47:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 19:47:37,575 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 19:47:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 19:47:37,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2022-11-20 19:47:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:37,576 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 19:47:37,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 9 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (32), 10 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 19:47:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 19:47:37,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 19:47:37,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:47:37,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 19:47:37,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 19:47:45,816 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 278 285) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,816 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 278 285) no Hoare annotation was computed. [2022-11-20 19:47:45,816 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 168 174) no Hoare annotation was computed. [2022-11-20 19:47:45,816 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 168 174) the Hoare annotation is: true [2022-11-20 19:47:45,817 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 942 953) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse2 (not (<= 2 ~waterLevel~0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse3) (or (not (= |old(~methaneLevelCritical~0)| 0)) .cse1 .cse2 .cse3))) [2022-11-20 19:47:45,817 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 942 953) no Hoare annotation was computed. [2022-11-20 19:47:45,817 INFO L902 garLoopResultBuilder]: At program point L480(lines 455 484) the Hoare annotation is: true [2022-11-20 19:47:45,817 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 455 484) no Hoare annotation was computed. [2022-11-20 19:47:45,817 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 455 484) the Hoare annotation is: true [2022-11-20 19:47:45,817 INFO L899 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2022-11-20 19:47:45,818 INFO L899 garLoopResultBuilder]: For program point L469(lines 469 473) no Hoare annotation was computed. [2022-11-20 19:47:45,818 INFO L902 garLoopResultBuilder]: At program point L469-1(lines 469 473) the Hoare annotation is: true [2022-11-20 19:47:45,818 INFO L902 garLoopResultBuilder]: At program point L465-2(lines 465 479) the Hoare annotation is: true [2022-11-20 19:47:45,818 INFO L902 garLoopResultBuilder]: At program point L461(line 461) the Hoare annotation is: true [2022-11-20 19:47:45,818 INFO L899 garLoopResultBuilder]: For program point L461-1(line 461) no Hoare annotation was computed. [2022-11-20 19:47:45,818 INFO L895 garLoopResultBuilder]: At program point L155-1(lines 155 161) the Hoare annotation is: (let ((.cse2 (= 0 ~systemActive~0))) (let ((.cse9 (= ~pumpRunning~0 0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse2))) (let ((.cse1 (and .cse8 .cse10)) (.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse4 (and .cse9 (<= 1 ~waterLevel~0) .cse10)) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 .cse4 .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5 .cse6 .cse2 .cse7) (or .cse6 .cse8 .cse2 .cse7) (or .cse5 .cse2 .cse4 .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse9 .cse7) .cse2))))) [2022-11-20 19:47:45,819 INFO L895 garLoopResultBuilder]: At program point L242(line 242) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~3#1| 0)) .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 19:47:45,819 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse0 .cse1))) [2022-11-20 19:47:45,819 INFO L895 garLoopResultBuilder]: At program point L234(line 234) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 19:47:45,819 INFO L899 garLoopResultBuilder]: For program point L234-1(line 234) no Hoare annotation was computed. [2022-11-20 19:47:45,820 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (<= 1 |old(~waterLevel~0)|))) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (= |old(~waterLevel~0)| ~waterLevel~0) .cse2) (or .cse0 .cse3 .cse1 .cse2) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3) .cse2 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 19:47:45,820 INFO L895 garLoopResultBuilder]: At program point L247-1(lines 228 252) the Hoare annotation is: (let ((.cse2 (= 0 ~systemActive~0))) (let ((.cse9 (= ~pumpRunning~0 0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse2))) (let ((.cse1 (and .cse8 .cse10)) (.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse4 (and .cse9 (<= 1 ~waterLevel~0) .cse10)) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 .cse4 .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5 .cse6 .cse2 .cse7) (or .cse6 .cse8 .cse2 .cse7) (or .cse5 .cse2 .cse4 .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse9 .cse7) .cse2))))) [2022-11-20 19:47:45,820 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 147 166) no Hoare annotation was computed. [2022-11-20 19:47:45,820 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 19:47:45,821 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 244) no Hoare annotation was computed. [2022-11-20 19:47:45,821 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 249) no Hoare annotation was computed. [2022-11-20 19:47:45,821 INFO L899 garLoopResultBuilder]: For program point L402(lines 402 408) no Hoare annotation was computed. [2022-11-20 19:47:45,821 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 144 167) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0) (not (<= 1 |old(~waterLevel~0)|)) .cse1))) [2022-11-20 19:47:45,822 INFO L895 garLoopResultBuilder]: At program point L398(lines 398 411) the Hoare annotation is: (let ((.cse5 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 1)) (.cse11 (= ~waterLevel~0 1))) (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (and .cse10 .cse11)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse4 (= ~pumpRunning~0 0)) (.cse9 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (and .cse5 .cse6)) (.cse3 (= 0 ~systemActive~0)) (.cse7 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2 .cse3) (or (and .cse4 (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|) (<= 1 ~waterLevel~0)) (and .cse0 .cse5 .cse6) .cse3 .cse7) (or .cse1 .cse8 .cse2 .cse3) (or .cse9 (not (= |old(~waterLevel~0)| 1)) (and .cse4 .cse10 .cse11) .cse3) (or .cse9 .cse8 .cse3 .cse7)))) [2022-11-20 19:47:45,822 INFO L895 garLoopResultBuilder]: At program point L398-1(lines 390 414) the Hoare annotation is: (let ((.cse3 (= 0 ~systemActive~0))) (let ((.cse10 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse11 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 1)) (.cse13 (= ~waterLevel~0 1)) (.cse12 (= ~pumpRunning~0 0)) (.cse14 (not .cse3))) (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse4 (and .cse12 (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|) (<= 1 ~waterLevel~0) .cse14)) (.cse1 (and .cse9 .cse13)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse5 (and .cse10 .cse11 .cse14)) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (not (= |old(~waterLevel~0)| 1)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse3 .cse5 .cse6) (or .cse7 .cse8 .cse9 .cse3) (or .cse0 .cse4 .cse3 .cse6) (or .cse1 (and .cse10 .cse11) .cse2 .cse3) (or .cse7 .cse3 .cse5 .cse6) (or .cse7 .cse8 (and .cse12 .cse13) .cse3))))) [2022-11-20 19:47:45,822 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 144 167) no Hoare annotation was computed. [2022-11-20 19:47:45,822 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-20 19:47:45,823 INFO L895 garLoopResultBuilder]: At program point L122(lines 73 123) the Hoare annotation is: false [2022-11-20 19:47:45,823 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 100) no Hoare annotation was computed. [2022-11-20 19:47:45,823 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 19:47:45,823 INFO L895 garLoopResultBuilder]: At program point L94-1(lines 94 100) the Hoare annotation is: (let ((.cse1 (<= 2 ~waterLevel~0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse6 (= ~pumpRunning~0 0)) (.cse0 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse7 (= ~waterLevel~0 1)) (.cse4 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4) (and .cse6 .cse5 .cse2 .cse3 .cse7 .cse4) (and .cse6 .cse0 .cse2 .cse3 .cse7 .cse4))) [2022-11-20 19:47:45,823 INFO L895 garLoopResultBuilder]: At program point L536(lines 536 543) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~8#1| 1) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0)) [2022-11-20 19:47:45,824 INFO L895 garLoopResultBuilder]: At program point L119(lines 74 121) the Hoare annotation is: (let ((.cse2 (<= 2 ~waterLevel~0)) (.cse1 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse0 (= ~pumpRunning~0 0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse3 .cse4 (= ~waterLevel~0 1) .cse5) (and .cse0 .cse6 .cse3 .cse4 (<= 1 ~waterLevel~0) .cse5))) [2022-11-20 19:47:45,824 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 .cse3) (and .cse4 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1)) .cse1 .cse2 (<= 1 ~waterLevel~0) .cse3) (and .cse4 .cse0 .cse1 .cse2 (= ~waterLevel~0 1) .cse3))) [2022-11-20 19:47:45,824 INFO L902 garLoopResultBuilder]: At program point L536-2(lines 536 543) the Hoare annotation is: true [2022-11-20 19:47:45,824 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 19:47:45,825 INFO L895 garLoopResultBuilder]: At program point L112-2(lines 104 117) the Hoare annotation is: (let ((.cse1 (<= 2 ~waterLevel~0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse6 (= ~pumpRunning~0 0)) (.cse0 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse7 (= ~waterLevel~0 1)) (.cse4 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4) (and .cse6 .cse5 .cse2 .cse3 .cse7 .cse4) (and .cse6 .cse0 .cse2 .cse3 .cse7 .cse4))) [2022-11-20 19:47:45,825 INFO L899 garLoopResultBuilder]: For program point L75(lines 74 121) no Hoare annotation was computed. [2022-11-20 19:47:45,825 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (let ((.cse2 (<= 2 ~waterLevel~0)) (.cse1 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse0 (= ~pumpRunning~0 0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse3 .cse4 (= ~waterLevel~0 1) .cse5) (and .cse0 .cse6 .cse3 .cse4 (<= 1 ~waterLevel~0) .cse5))) [2022-11-20 19:47:45,825 INFO L902 garLoopResultBuilder]: At program point L125(lines 64 129) the Hoare annotation is: true [2022-11-20 19:47:45,825 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2022-11-20 19:47:45,825 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2022-11-20 19:47:45,826 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 176 200) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,826 INFO L895 garLoopResultBuilder]: At program point L190(line 190) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse1) (or .cse0 (not (<= 2 ~waterLevel~0)) .cse1))) [2022-11-20 19:47:45,826 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 192) no Hoare annotation was computed. [2022-11-20 19:47:45,826 INFO L895 garLoopResultBuilder]: At program point L180(lines 180 197) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,826 INFO L895 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,827 INFO L899 garLoopResultBuilder]: For program point L195-1(lines 176 200) no Hoare annotation was computed. [2022-11-20 19:47:45,827 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 176 200) no Hoare annotation was computed. [2022-11-20 19:47:45,827 INFO L895 garLoopResultBuilder]: At program point L266(line 266) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,827 INFO L895 garLoopResultBuilder]: At program point L266-1(line 266) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1) (or .cse0 (not (<= 2 ~waterLevel~0)) .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1) (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret11#1|))))) [2022-11-20 19:47:45,827 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 930 941) no Hoare annotation was computed. [2022-11-20 19:47:45,828 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 930 941) the Hoare annotation is: (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse0 .cse1 .cse2))) .cse3) (or (not (= ~methaneLevelCritical~0 0)) .cse3 .cse1 .cse2))) [2022-11-20 19:47:45,828 INFO L895 garLoopResultBuilder]: At program point L221(line 221) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 0) .cse0 .cse1) (or .cse0 (= |old(~pumpRunning~0)| 0) .cse1))) [2022-11-20 19:47:45,828 INFO L899 garLoopResultBuilder]: For program point L221-1(lines 202 226) no Hoare annotation was computed. [2022-11-20 19:47:45,828 INFO L895 garLoopResultBuilder]: At program point L216(line 216) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,829 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 |processEnvironment__wrappee__methaneQuery_~tmp~2#1|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2022-11-20 19:47:45,829 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 218) no Hoare annotation was computed. [2022-11-20 19:47:45,829 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 202 226) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,829 INFO L895 garLoopResultBuilder]: At program point L206(lines 206 223) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-20 19:47:45,829 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 202 226) no Hoare annotation was computed. [2022-11-20 19:47:45,829 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 286 296) the Hoare annotation is: true [2022-11-20 19:47:45,830 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 286 296) no Hoare annotation was computed. [2022-11-20 19:47:45,833 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:45,835 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:47:45,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:47:45 BoogieIcfgContainer [2022-11-20 19:47:45,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:47:45,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:47:45,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:47:45,884 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:47:45,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:55" (3/4) ... [2022-11-20 19:47:45,888 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 19:47:45,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-20 19:47:45,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 19:47:45,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 19:47:45,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 19:47:45,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 19:47:45,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 19:47:45,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 19:47:45,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-20 19:47:45,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-20 19:47:45,914 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2022-11-20 19:47:45,915 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 19:47:45,915 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 19:47:45,916 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:47:45,916 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:47:45,947 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel) && tmp == systemActive) [2022-11-20 19:47:45,948 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-20 19:47:45,949 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-20 19:47:45,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) [2022-11-20 19:47:45,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-20 19:47:45,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (pumpRunning == \old(pumpRunning) || !(1 <= waterLevel)) || 0 == systemActive [2022-11-20 19:47:45,952 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || 0 == systemActive [2022-11-20 19:47:45,953 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && (((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) || ((methaneLevelCritical == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel))) [2022-11-20 19:47:45,953 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && ((((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive)) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || 0 == systemActive)) && (((methaneLevelCritical == 0 || (((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-20 19:47:45,953 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || !(2 <= waterLevel)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) [2022-11-20 19:47:45,956 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || 0 == systemActive) && (0 == systemActive || !(2 <= \old(waterLevel))) [2022-11-20 19:47:46,013 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:47:46,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:47:46,014 INFO L158 Benchmark]: Toolchain (without parser) took 51629.05ms. Allocated memory was 144.7MB in the beginning and 662.7MB in the end (delta: 518.0MB). Free memory was 100.4MB in the beginning and 379.3MB in the end (delta: -278.9MB). Peak memory consumption was 239.6MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,014 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 144.7MB. Free memory is still 110.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:47:46,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.02ms. Allocated memory is still 144.7MB. Free memory was 99.8MB in the beginning and 80.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.11ms. Allocated memory is still 144.7MB. Free memory was 80.9MB in the beginning and 78.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,017 INFO L158 Benchmark]: Boogie Preprocessor took 26.72ms. Allocated memory is still 144.7MB. Free memory was 78.3MB in the beginning and 76.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,018 INFO L158 Benchmark]: RCFGBuilder took 651.48ms. Allocated memory is still 144.7MB. Free memory was 76.8MB in the beginning and 50.0MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,019 INFO L158 Benchmark]: TraceAbstraction took 50332.45ms. Allocated memory was 144.7MB in the beginning and 662.7MB in the end (delta: 518.0MB). Free memory was 48.9MB in the beginning and 385.6MB in the end (delta: -336.7MB). Peak memory consumption was 340.3MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,019 INFO L158 Benchmark]: Witness Printer took 130.05ms. Allocated memory is still 662.7MB. Free memory was 385.6MB in the beginning and 379.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 19:47:46,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 144.7MB. Free memory is still 110.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.02ms. Allocated memory is still 144.7MB. Free memory was 99.8MB in the beginning and 80.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.11ms. Allocated memory is still 144.7MB. Free memory was 80.9MB in the beginning and 78.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.72ms. Allocated memory is still 144.7MB. Free memory was 78.3MB in the beginning and 76.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 651.48ms. Allocated memory is still 144.7MB. Free memory was 76.8MB in the beginning and 50.0MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 50332.45ms. Allocated memory was 144.7MB in the beginning and 662.7MB in the end (delta: 518.0MB). Free memory was 48.9MB in the beginning and 385.6MB in the end (delta: -336.7MB). Peak memory consumption was 340.3MB. Max. memory is 16.1GB. * Witness Printer took 130.05ms. Allocated memory is still 662.7MB. Free memory was 385.6MB in the beginning and 379.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: 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 10 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2785 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2736 mSDsluCounter, 2812 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1946 mSDsCounter, 1667 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4419 IncrementalHoareTripleChecker+Invalid, 6086 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1667 mSolverCounterUnsat, 866 mSDtfsCounter, 4419 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1153 GetRequests, 824 SyntacticMatches, 28 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1020occurred in iteration=12, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 480 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 3112 PreInvPairs, 3514 NumberOfFragments, 1453 HoareAnnotationTreeSize, 3112 FomulaSimplifications, 24744 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 41 FomulaSimplificationsInter, 50264 FormulaSimplificationTreeSizeReductionInter, 6.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 1356 NumberOfCodeBlocks, 1175 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1521 ConstructedInterpolants, 0 QuantifiedInterpolants, 4354 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1543 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 21 InterpolantComputations, 12 PerfectInterpolantSequences, 851/1099 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || 0 == systemActive) && (0 == systemActive || !(2 <= \old(waterLevel))) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel) && tmp == systemActive) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: (((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: (pumpRunning == \old(pumpRunning) || !(1 <= waterLevel)) || 0 == systemActive - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: (((((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && ((((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive)) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || 0 == systemActive)) && (((methaneLevelCritical == 0 || (((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 465]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 286]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: (((((((!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || 0 == systemActive - InvariantResult [Line: 398]: Loop Invariant Derived loop invariant: (((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && (((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) || ((methaneLevelCritical == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 266]: Loop Invariant Derived loop invariant: ((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || !(2 <= waterLevel)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && waterLevel == 1) && tmp == systemActive - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 455]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 19:47:46,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c395ce-47db-430a-8b01-b9adc2109079/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE