./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW --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 45558e1c10008e5b16efe572a84fcf92b08797f54d586c51d45827b7e38254a6 --- 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-4e7fbc6 [2022-11-23 16:05:03,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:05:03,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:05:03,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:05:03,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:05:03,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:05:03,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:05:03,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:05:03,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:05:03,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:05:03,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:05:03,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:05:03,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:05:03,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:05:03,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:05:03,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:05:03,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:05:03,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:05:03,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:05:03,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:05:03,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:05:03,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:05:03,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:05:03,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:05:03,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:05:03,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:05:03,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:05:03,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:05:03,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:05:03,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:05:03,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:05:03,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:05:03,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:05:03,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:05:03,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:05:03,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:05:03,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:05:03,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:05:03,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:05:03,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:05:03,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:05:03,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:05:03,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:05:03,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:05:03,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:05:03,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:05:03,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:05:03,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:05:03,240 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:05:03,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:05:03,240 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:05:03,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:05:03,240 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:05:03,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:05:03,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:05:03,241 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:05:03,241 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:05:03,242 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:05:03,242 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:05:03,242 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:05:03,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:05:03,243 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:05:03,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:05:03,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:05:03,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:05:03,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:05:03,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:05:03,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:05:03,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:05:03,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:05:03,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:05:03,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:05:03,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:05:03,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:05:03,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:05:03,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:05:03,246 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:05:03,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:05:03,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:05:03,247 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:05:03,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:05:03,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:05:03,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:05:03,248 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_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45558e1c10008e5b16efe572a84fcf92b08797f54d586c51d45827b7e38254a6 [2022-11-23 16:05:03,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:05:03,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:05:03,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:05:03,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:05:03,587 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:05:03,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c [2022-11-23 16:05:06,759 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:05:07,028 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:05:07,029 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c [2022-11-23 16:05:07,040 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/data/08a0315d8/087148e71ef24f31af5be7622d7013bd/FLAG9b7b841aa [2022-11-23 16:05:07,055 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/data/08a0315d8/087148e71ef24f31af5be7622d7013bd [2022-11-23 16:05:07,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:05:07,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:05:07,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:05:07,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:05:07,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:05:07,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff5dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07, skipping insertion in model container [2022-11-23 16:05:07,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:05:07,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:05:07,390 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_7eb77202-b63a-41a1-80c3-642ea7e14994/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c[9333,9346] [2022-11-23 16:05:07,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:05:07,516 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:05:07,562 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_7eb77202-b63a-41a1-80c3-642ea7e14994/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c[9333,9346] [2022-11-23 16:05:07,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:05:07,616 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:05:07,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07 WrapperNode [2022-11-23 16:05:07,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:05:07,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:05:07,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:05:07,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:05:07,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,668 INFO L138 Inliner]: procedures = 63, calls = 121, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 295 [2022-11-23 16:05:07,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:05:07,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:05:07,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:05:07,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:05:07,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:05:07,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:05:07,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:05:07,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:05:07,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (1/1) ... [2022-11-23 16:05:07,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:05:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:07,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:05:07,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:05:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:05:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2022-11-23 16:05:07,795 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2022-11-23 16:05:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 16:05:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 16:05:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 16:05:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 16:05:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2022-11-23 16:05:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2022-11-23 16:05:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 16:05:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 16:05:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2022-11-23 16:05:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2022-11-23 16:05:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2022-11-23 16:05:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2022-11-23 16:05:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-23 16:05:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-23 16:05:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-23 16:05:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-23 16:05:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:05:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-23 16:05:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-23 16:05:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 16:05:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 16:05:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:05:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:05:07,890 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:05:07,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:05:08,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:05:08,491 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:05:08,492 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 16:05:08,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:05:08 BoogieIcfgContainer [2022-11-23 16:05:08,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:05:08,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:05:08,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:05:08,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:05:08,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:05:07" (1/3) ... [2022-11-23 16:05:08,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f0e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:05:08, skipping insertion in model container [2022-11-23 16:05:08,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:07" (2/3) ... [2022-11-23 16:05:08,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f0e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:05:08, skipping insertion in model container [2022-11-23 16:05:08,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:05:08" (3/3) ... [2022-11-23 16:05:08,504 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2022-11-23 16:05:08,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:05:08,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:05:08,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:05:08,625 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;@1ecab4cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:05:08,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:05:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 78 states have internal predecessors, (88), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-23 16:05:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 16:05:08,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:08,644 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-23 16:05:08,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash 95214816, now seen corresponding path program 1 times [2022-11-23 16:05:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150940425] [2022-11-23 16:05:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:08,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150940425] [2022-11-23 16:05:08,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150940425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:08,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:08,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:05:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929389238] [2022-11-23 16:05:08,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:08,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 16:05:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 16:05:08,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:05:08,950 INFO L87 Difference]: Start difference. First operand has 103 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 78 states have internal predecessors, (88), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 16:05:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:09,081 INFO L93 Difference]: Finished difference Result 190 states and 270 transitions. [2022-11-23 16:05:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 16:05:09,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2022-11-23 16:05:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:09,094 INFO L225 Difference]: With dead ends: 190 [2022-11-23 16:05:09,094 INFO L226 Difference]: Without dead ends: 98 [2022-11-23 16:05:09,098 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 [2022-11-23 16:05:09,101 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:09,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:05:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-23 16:05:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-23 16:05:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 74 states have internal predecessors, (80), 28 states have call successors, (28), 11 states have call predecessors, (28), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-23 16:05:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 135 transitions. [2022-11-23 16:05:09,152 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 135 transitions. Word has length 36 [2022-11-23 16:05:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:09,154 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 135 transitions. [2022-11-23 16:05:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 16:05:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 135 transitions. [2022-11-23 16:05:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 16:05:09,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:09,157 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-23 16:05:09,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:05:09,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1891052017, now seen corresponding path program 1 times [2022-11-23 16:05:09,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:09,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420296995] [2022-11-23 16:05:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:09,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:09,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:09,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420296995] [2022-11-23 16:05:09,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420296995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:09,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:09,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253997539] [2022-11-23 16:05:09,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:09,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:09,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:09,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:09,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:09,301 INFO L87 Difference]: Start difference. First operand 98 states and 135 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 16:05:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:09,358 INFO L93 Difference]: Finished difference Result 153 states and 211 transitions. [2022-11-23 16:05:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:09,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2022-11-23 16:05:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:09,361 INFO L225 Difference]: With dead ends: 153 [2022-11-23 16:05:09,361 INFO L226 Difference]: Without dead ends: 90 [2022-11-23 16:05:09,362 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 [2022-11-23 16:05:09,364 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 16 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:09,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 194 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:09,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-23 16:05:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-23 16:05:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 69 states have internal predecessors, (74), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 20 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-23 16:05:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2022-11-23 16:05:09,389 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 37 [2022-11-23 16:05:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:09,390 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2022-11-23 16:05:09,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 16:05:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2022-11-23 16:05:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 16:05:09,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:09,393 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-23 16:05:09,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:05:09,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash 984782066, now seen corresponding path program 1 times [2022-11-23 16:05:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:09,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854551513] [2022-11-23 16:05:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:09,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:09,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:09,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854551513] [2022-11-23 16:05:09,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854551513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:09,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:09,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:05:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735866281] [2022-11-23 16:05:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:09,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:05:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:05:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:09,763 INFO L87 Difference]: Start difference. First operand 90 states and 124 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 16:05:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:10,104 INFO L93 Difference]: Finished difference Result 258 states and 358 transitions. [2022-11-23 16:05:10,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:05:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-11-23 16:05:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:10,114 INFO L225 Difference]: With dead ends: 258 [2022-11-23 16:05:10,114 INFO L226 Difference]: Without dead ends: 184 [2022-11-23 16:05:10,117 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 [2022-11-23 16:05:10,120 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 169 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:10,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 348 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:05:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-23 16:05:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2022-11-23 16:05:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 140 states have internal predecessors, (154), 39 states have call successors, (39), 20 states have call predecessors, (39), 23 states have return successors, (44), 38 states have call predecessors, (44), 39 states have call successors, (44) [2022-11-23 16:05:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-23 16:05:10,179 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 40 [2022-11-23 16:05:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:10,179 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-23 16:05:10,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 16:05:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-23 16:05:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 16:05:10,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:10,188 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-23 16:05:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:05:10,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:10,192 INFO L85 PathProgramCache]: Analyzing trace with hash -57611138, now seen corresponding path program 1 times [2022-11-23 16:05:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:10,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123639203] [2022-11-23 16:05:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:10,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:10,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:10,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123639203] [2022-11-23 16:05:10,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123639203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:10,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:10,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 16:05:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360561259] [2022-11-23 16:05:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:05:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:05:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:05:10,515 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 16:05:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:11,338 INFO L93 Difference]: Finished difference Result 395 states and 541 transitions. [2022-11-23 16:05:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 16:05:11,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-11-23 16:05:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:11,341 INFO L225 Difference]: With dead ends: 395 [2022-11-23 16:05:11,342 INFO L226 Difference]: Without dead ends: 318 [2022-11-23 16:05:11,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 16:05:11,351 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 324 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:11,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 487 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:05:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-23 16:05:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 271. [2022-11-23 16:05:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 179 states have (on average 1.312849162011173) internal successors, (235), 213 states have internal predecessors, (235), 54 states have call successors, (54), 31 states have call predecessors, (54), 37 states have return successors, (64), 58 states have call predecessors, (64), 54 states have call successors, (64) [2022-11-23 16:05:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 353 transitions. [2022-11-23 16:05:11,415 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 353 transitions. Word has length 43 [2022-11-23 16:05:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:11,418 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 353 transitions. [2022-11-23 16:05:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 16:05:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 353 transitions. [2022-11-23 16:05:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 16:05:11,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:11,424 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1] [2022-11-23 16:05:11,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:05:11,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 226918611, now seen corresponding path program 1 times [2022-11-23 16:05:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:11,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052667211] [2022-11-23 16:05:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:11,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:11,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052667211] [2022-11-23 16:05:11,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052667211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:11,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:11,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:11,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311192218] [2022-11-23 16:05:11,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:11,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:11,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:11,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:11,574 INFO L87 Difference]: Start difference. First operand 271 states and 353 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 16:05:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:11,654 INFO L93 Difference]: Finished difference Result 601 states and 788 transitions. [2022-11-23 16:05:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:11,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-11-23 16:05:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:11,673 INFO L225 Difference]: With dead ends: 601 [2022-11-23 16:05:11,674 INFO L226 Difference]: Without dead ends: 346 [2022-11-23 16:05:11,675 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 [2022-11-23 16:05:11,678 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 104 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:11,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 140 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-23 16:05:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 335. [2022-11-23 16:05:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 227 states have (on average 1.3215859030837005) internal successors, (300), 266 states have internal predecessors, (300), 62 states have call successors, (62), 39 states have call predecessors, (62), 45 states have return successors, (77), 66 states have call predecessors, (77), 62 states have call successors, (77) [2022-11-23 16:05:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 439 transitions. [2022-11-23 16:05:11,740 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 439 transitions. Word has length 72 [2022-11-23 16:05:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:11,740 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 439 transitions. [2022-11-23 16:05:11,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 16:05:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 439 transitions. [2022-11-23 16:05:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 16:05:11,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:11,745 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:11,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:05:11,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1342599677, now seen corresponding path program 1 times [2022-11-23 16:05:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:11,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791586064] [2022-11-23 16:05:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:11,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:11,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791586064] [2022-11-23 16:05:11,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791586064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:11,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:11,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:05:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144998668] [2022-11-23 16:05:11,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:11,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:05:11,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:05:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:11,823 INFO L87 Difference]: Start difference. First operand 335 states and 439 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 16:05:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:12,004 INFO L93 Difference]: Finished difference Result 674 states and 888 transitions. [2022-11-23 16:05:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:05:12,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2022-11-23 16:05:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:12,008 INFO L225 Difference]: With dead ends: 674 [2022-11-23 16:05:12,008 INFO L226 Difference]: Without dead ends: 355 [2022-11-23 16:05:12,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:12,010 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 150 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:12,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 204 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:05:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-23 16:05:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 344. [2022-11-23 16:05:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 272 states have internal predecessors, (306), 65 states have call successors, (65), 42 states have call predecessors, (65), 45 states have return successors, (80), 66 states have call predecessors, (80), 65 states have call successors, (80) [2022-11-23 16:05:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 451 transitions. [2022-11-23 16:05:12,050 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 451 transitions. Word has length 80 [2022-11-23 16:05:12,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:12,051 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 451 transitions. [2022-11-23 16:05:12,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 16:05:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 451 transitions. [2022-11-23 16:05:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 16:05:12,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:12,054 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:12,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:05:12,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -121839512, now seen corresponding path program 1 times [2022-11-23 16:05:12,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:12,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917623511] [2022-11-23 16:05:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:12,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:12,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917623511] [2022-11-23 16:05:12,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917623511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:12,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:12,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:12,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732717475] [2022-11-23 16:05:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:12,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:12,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:12,117 INFO L87 Difference]: Start difference. First operand 344 states and 451 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 16:05:12,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:12,235 INFO L93 Difference]: Finished difference Result 628 states and 845 transitions. [2022-11-23 16:05:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:12,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2022-11-23 16:05:12,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:12,239 INFO L225 Difference]: With dead ends: 628 [2022-11-23 16:05:12,239 INFO L226 Difference]: Without dead ends: 407 [2022-11-23 16:05:12,240 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 [2022-11-23 16:05:12,241 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 58 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:12,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 265 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:05:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-23 16:05:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2022-11-23 16:05:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 271 states have (on average 1.3099630996309963) internal successors, (355), 315 states have internal predecessors, (355), 75 states have call successors, (75), 49 states have call predecessors, (75), 52 states have return successors, (101), 76 states have call predecessors, (101), 75 states have call successors, (101) [2022-11-23 16:05:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 531 transitions. [2022-11-23 16:05:12,286 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 531 transitions. Word has length 76 [2022-11-23 16:05:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:12,287 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 531 transitions. [2022-11-23 16:05:12,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 16:05:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 531 transitions. [2022-11-23 16:05:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 16:05:12,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:12,290 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:05:12,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1063160965, now seen corresponding path program 1 times [2022-11-23 16:05:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:12,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459491317] [2022-11-23 16:05:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:12,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:12,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:12,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459491317] [2022-11-23 16:05:12,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459491317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:12,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088235395] [2022-11-23 16:05:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:12,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:12,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:12,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:12,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:05:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:12,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:05:12,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:13,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:05:13,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088235395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:13,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:05:13,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-11-23 16:05:13,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052282135] [2022-11-23 16:05:13,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:13,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:05:13,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:05:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-23 16:05:13,556 INFO L87 Difference]: Start difference. First operand 399 states and 531 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 16:05:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:14,723 INFO L93 Difference]: Finished difference Result 893 states and 1202 transitions. [2022-11-23 16:05:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 16:05:14,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 79 [2022-11-23 16:05:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:14,728 INFO L225 Difference]: With dead ends: 893 [2022-11-23 16:05:14,729 INFO L226 Difference]: Without dead ends: 510 [2022-11-23 16:05:14,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2022-11-23 16:05:14,732 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 291 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:14,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 369 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:05:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-23 16:05:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 446. [2022-11-23 16:05:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 304 states have (on average 1.3125) internal successors, (399), 347 states have internal predecessors, (399), 77 states have call successors, (77), 54 states have call predecessors, (77), 64 states have return successors, (115), 87 states have call predecessors, (115), 77 states have call successors, (115) [2022-11-23 16:05:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 591 transitions. [2022-11-23 16:05:14,815 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 591 transitions. Word has length 79 [2022-11-23 16:05:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:14,815 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 591 transitions. [2022-11-23 16:05:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-23 16:05:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 591 transitions. [2022-11-23 16:05:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:05:14,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:14,823 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:14,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:15,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:15,032 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1676472334, now seen corresponding path program 1 times [2022-11-23 16:05:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:15,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010309657] [2022-11-23 16:05:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:15,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010309657] [2022-11-23 16:05:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010309657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:15,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:15,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093495658] [2022-11-23 16:05:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:15,108 INFO L87 Difference]: Start difference. First operand 446 states and 591 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:15,271 INFO L93 Difference]: Finished difference Result 1276 states and 1706 transitions. [2022-11-23 16:05:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 87 [2022-11-23 16:05:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:15,276 INFO L225 Difference]: With dead ends: 1276 [2022-11-23 16:05:15,277 INFO L226 Difference]: Without dead ends: 846 [2022-11-23 16:05:15,279 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 [2022-11-23 16:05:15,279 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 83 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:15,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 230 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-11-23 16:05:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-11-23 16:05:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 581 states have (on average 1.314974182444062) internal successors, (764), 656 states have internal predecessors, (764), 136 states have call successors, (136), 106 states have call predecessors, (136), 126 states have return successors, (215), 150 states have call predecessors, (215), 136 states have call successors, (215) [2022-11-23 16:05:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1115 transitions. [2022-11-23 16:05:15,406 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1115 transitions. Word has length 87 [2022-11-23 16:05:15,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:15,406 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1115 transitions. [2022-11-23 16:05:15,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:15,407 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1115 transitions. [2022-11-23 16:05:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:05:15,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:15,410 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:15,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:05:15,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1775405875, now seen corresponding path program 1 times [2022-11-23 16:05:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:15,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996507463] [2022-11-23 16:05:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:15,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 16:05:15,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:15,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996507463] [2022-11-23 16:05:15,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996507463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:15,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:15,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44264311] [2022-11-23 16:05:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:15,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:15,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:15,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:15,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:15,467 INFO L87 Difference]: Start difference. First operand 844 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:15,632 INFO L93 Difference]: Finished difference Result 1331 states and 1757 transitions. [2022-11-23 16:05:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:15,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-11-23 16:05:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:15,638 INFO L225 Difference]: With dead ends: 1331 [2022-11-23 16:05:15,638 INFO L226 Difference]: Without dead ends: 929 [2022-11-23 16:05:15,640 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 [2022-11-23 16:05:15,640 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 81 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:15,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 267 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-11-23 16:05:15,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 927. [2022-11-23 16:05:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 644 states have (on average 1.313664596273292) internal successors, (846), 723 states have internal predecessors, (846), 148 states have call successors, (148), 118 states have call predecessors, (148), 134 states have return successors, (221), 158 states have call predecessors, (221), 148 states have call successors, (221) [2022-11-23 16:05:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1215 transitions. [2022-11-23 16:05:15,787 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1215 transitions. Word has length 89 [2022-11-23 16:05:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:15,788 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1215 transitions. [2022-11-23 16:05:15,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1215 transitions. [2022-11-23 16:05:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:05:15,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:15,792 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:15,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 16:05:15,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1128298290, now seen corresponding path program 1 times [2022-11-23 16:05:15,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:15,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650810167] [2022-11-23 16:05:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:15,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 16:05:15,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:15,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650810167] [2022-11-23 16:05:15,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650810167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:15,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718089672] [2022-11-23 16:05:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:15,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:15,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:15,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:05:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:15,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:05:15,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:16,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:05:16,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718089672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:16,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:05:16,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 16:05:16,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513452702] [2022-11-23 16:05:16,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:16,053 INFO L87 Difference]: Start difference. First operand 927 states and 1215 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:16,332 INFO L93 Difference]: Finished difference Result 2489 states and 3312 transitions. [2022-11-23 16:05:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 87 [2022-11-23 16:05:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:16,341 INFO L225 Difference]: With dead ends: 2489 [2022-11-23 16:05:16,341 INFO L226 Difference]: Without dead ends: 1663 [2022-11-23 16:05:16,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:16,347 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 67 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:16,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 242 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-23 16:05:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1601. [2022-11-23 16:05:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1121 states have (on average 1.3068688670829616) internal successors, (1465), 1249 states have internal predecessors, (1465), 245 states have call successors, (245), 210 states have call predecessors, (245), 234 states have return successors, (389), 253 states have call predecessors, (389), 245 states have call successors, (389) [2022-11-23 16:05:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2099 transitions. [2022-11-23 16:05:16,592 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2099 transitions. Word has length 87 [2022-11-23 16:05:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:16,593 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2099 transitions. [2022-11-23 16:05:16,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2099 transitions. [2022-11-23 16:05:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 16:05:16,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:16,598 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 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] [2022-11-23 16:05:16,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:16,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:16,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1867303685, now seen corresponding path program 1 times [2022-11-23 16:05:16,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:16,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656002770] [2022-11-23 16:05:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 16:05:16,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:16,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656002770] [2022-11-23 16:05:16,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656002770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793693570] [2022-11-23 16:05:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:16,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:16,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:16,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:16,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:05:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:17,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:05:17,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:17,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:05:17,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793693570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:17,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:05:17,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 16:05:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762222010] [2022-11-23 16:05:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:17,083 INFO L87 Difference]: Start difference. First operand 1601 states and 2099 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 16:05:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:17,310 INFO L93 Difference]: Finished difference Result 2311 states and 3000 transitions. [2022-11-23 16:05:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 90 [2022-11-23 16:05:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:17,319 INFO L225 Difference]: With dead ends: 2311 [2022-11-23 16:05:17,320 INFO L226 Difference]: Without dead ends: 1613 [2022-11-23 16:05:17,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:17,323 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 67 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:17,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 277 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2022-11-23 16:05:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1611. [2022-11-23 16:05:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1127 states have (on average 1.3016858917480036) internal successors, (1467), 1255 states have internal predecessors, (1467), 249 states have call successors, (249), 214 states have call predecessors, (249), 234 states have return successors, (361), 253 states have call predecessors, (361), 249 states have call successors, (361) [2022-11-23 16:05:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2077 transitions. [2022-11-23 16:05:17,545 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2077 transitions. Word has length 90 [2022-11-23 16:05:17,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:17,546 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2077 transitions. [2022-11-23 16:05:17,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 16:05:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2077 transitions. [2022-11-23 16:05:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 16:05:17,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:17,551 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:17,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:17,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 16:05:17,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:17,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1271005518, now seen corresponding path program 1 times [2022-11-23 16:05:17,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464050898] [2022-11-23 16:05:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:17,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 16:05:17,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:17,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464050898] [2022-11-23 16:05:17,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464050898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461634561] [2022-11-23 16:05:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:17,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:17,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:17,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:05:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:17,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:05:17,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:17,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:05:17,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461634561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:17,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:05:17,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-23 16:05:17,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282913403] [2022-11-23 16:05:17,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:17,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:17,996 INFO L87 Difference]: Start difference. First operand 1611 states and 2077 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 16:05:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:18,292 INFO L93 Difference]: Finished difference Result 3575 states and 4671 transitions. [2022-11-23 16:05:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:18,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 88 [2022-11-23 16:05:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:18,304 INFO L225 Difference]: With dead ends: 3575 [2022-11-23 16:05:18,304 INFO L226 Difference]: Without dead ends: 2077 [2022-11-23 16:05:18,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:18,310 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 70 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:18,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 213 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:05:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2022-11-23 16:05:18,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2077. [2022-11-23 16:05:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1477 states have (on average 1.2830060934326337) internal successors, (1895), 1611 states have internal predecessors, (1895), 303 states have call successors, (303), 284 states have call predecessors, (303), 296 states have return successors, (495), 299 states have call predecessors, (495), 303 states have call successors, (495) [2022-11-23 16:05:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2693 transitions. [2022-11-23 16:05:18,592 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2693 transitions. Word has length 88 [2022-11-23 16:05:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:18,592 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 2693 transitions. [2022-11-23 16:05:18,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 16:05:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2693 transitions. [2022-11-23 16:05:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:05:18,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:18,599 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:18,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 16:05:18,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1029364749, now seen corresponding path program 1 times [2022-11-23 16:05:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330690135] [2022-11-23 16:05:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 16:05:18,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330690135] [2022-11-23 16:05:18,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330690135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:18,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:18,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:05:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560717547] [2022-11-23 16:05:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:18,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:05:18,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:05:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:05:18,930 INFO L87 Difference]: Start difference. First operand 2077 states and 2693 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:19,665 INFO L93 Difference]: Finished difference Result 4595 states and 6044 transitions. [2022-11-23 16:05:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:05:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-11-23 16:05:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:19,686 INFO L225 Difference]: With dead ends: 4595 [2022-11-23 16:05:19,686 INFO L226 Difference]: Without dead ends: 4155 [2022-11-23 16:05:19,689 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 [2022-11-23 16:05:19,690 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 106 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:19,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 550 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:05:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4155 states. [2022-11-23 16:05:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4155 to 3602. [2022-11-23 16:05:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3602 states, 2625 states have (on average 1.283047619047619) internal successors, (3368), 2811 states have internal predecessors, (3368), 496 states have call successors, (496), 467 states have call predecessors, (496), 480 states have return successors, (854), 486 states have call predecessors, (854), 496 states have call successors, (854) [2022-11-23 16:05:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 4718 transitions. [2022-11-23 16:05:20,196 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 4718 transitions. Word has length 89 [2022-11-23 16:05:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:20,196 INFO L495 AbstractCegarLoop]: Abstraction has 3602 states and 4718 transitions. [2022-11-23 16:05:20,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:05:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 4718 transitions. [2022-11-23 16:05:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:05:20,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:20,206 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 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] [2022-11-23 16:05:20,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 16:05:20,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -831968201, now seen corresponding path program 1 times [2022-11-23 16:05:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:20,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319936293] [2022-11-23 16:05:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:20,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:20,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319936293] [2022-11-23 16:05:20,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319936293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:20,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479856084] [2022-11-23 16:05:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:20,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:20,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:20,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:20,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:05:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:20,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 16:05:20,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:05:21,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:05:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 16:05:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479856084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:05:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1819244750] [2022-11-23 16:05:21,922 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-23 16:05:21,922 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:05:21,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:05:21,932 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:05:21,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:05:27,807 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 172 for LOIs [2022-11-23 16:05:27,838 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 79 for LOIs [2022-11-23 16:05:28,024 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__methaneAlarm with input of size 76 for LOIs [2022-11-23 16:05:28,452 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 186 for LOIs [2022-11-23 16:05:28,507 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__lowWaterSensor with input of size 77 for LOIs [2022-11-23 16:05:28,794 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__before__methaneQuery with input of size 81 for LOIs [2022-11-23 16:05:28,806 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 84 for LOIs [2022-11-23 16:05:28,820 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:05:45,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51042#(and (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~2#1|) (<= 0 (+ ~__SELECTED_FEATURE_lowWaterSensor~0 2147483648)) (<= ~__SELECTED_FEATURE_lowWaterSensor~0 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (<= 0 (+ ~__SELECTED_FEATURE_methaneQuery~0 2147483648)) (<= ~__SELECTED_FEATURE_highWaterSensor~0 2147483647) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (<= |old(~pumpRunning~0)| 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_startCommand~0)) (<= ~__SELECTED_FEATURE_methaneQuery~0 2147483647) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_highWaterSensor~0)) (= ~__SELECTED_FEATURE_methaneAlarm~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__SELECTED_FEATURE_startCommand~0 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~__SELECTED_FEATURE_base~0 1) (<= 0 (+ ~__SELECTED_FEATURE_stopCommand~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~9#1| ~waterLevel~0) (<= ~__SELECTED_FEATURE_stopCommand~0 2147483647) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~2#1|))' at error location [2022-11-23 16:05:45,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:05:45,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:05:45,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 7] total 20 [2022-11-23 16:05:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20791497] [2022-11-23 16:05:45,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:05:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 16:05:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 16:05:45,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=3933, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 16:05:45,310 INFO L87 Difference]: Start difference. First operand 3602 states and 4718 transitions. Second operand has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 17 states have internal predecessors, (128), 10 states have call successors, (37), 9 states have call predecessors, (37), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2022-11-23 16:05:50,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:50,545 INFO L93 Difference]: Finished difference Result 8218 states and 11281 transitions. [2022-11-23 16:05:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-23 16:05:50,546 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 17 states have internal predecessors, (128), 10 states have call successors, (37), 9 states have call predecessors, (37), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) Word has length 89 [2022-11-23 16:05:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:50,585 INFO L225 Difference]: With dead ends: 8218 [2022-11-23 16:05:50,585 INFO L226 Difference]: Without dead ends: 6142 [2022-11-23 16:05:50,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 235 SyntacticMatches, 10 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7983 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=1708, Invalid=16652, Unknown=0, NotChecked=0, Total=18360 [2022-11-23 16:05:50,603 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1640 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 1232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1232 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:50,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 858 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1232 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 16:05:50,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-11-23 16:05:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 5614. [2022-11-23 16:05:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 4114 states have (on average 1.2630043753038405) internal successors, (5196), 4384 states have internal predecessors, (5196), 750 states have call successors, (750), 707 states have call predecessors, (750), 749 states have return successors, (1362), 747 states have call predecessors, (1362), 750 states have call successors, (1362) [2022-11-23 16:05:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 7308 transitions. [2022-11-23 16:05:51,527 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 7308 transitions. Word has length 89 [2022-11-23 16:05:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:51,529 INFO L495 AbstractCegarLoop]: Abstraction has 5614 states and 7308 transitions. [2022-11-23 16:05:51,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 17 states have internal predecessors, (128), 10 states have call successors, (37), 9 states have call predecessors, (37), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2022-11-23 16:05:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 7308 transitions. [2022-11-23 16:05:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-23 16:05:51,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:51,544 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 16:05:51,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:51,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:51,755 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1761849453, now seen corresponding path program 1 times [2022-11-23 16:05:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:51,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180583810] [2022-11-23 16:05:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:51,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:05:51,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:05:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:05:51,842 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 16:05:51,842 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:05:51,844 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:05:51,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 16:05:51,850 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:51,857 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:05:51,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:05:51 BoogieIcfgContainer [2022-11-23 16:05:51,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:05:51,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:05:52,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:05:52,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:05:52,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:05:08" (3/4) ... [2022-11-23 16:05:52,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 16:05:52,163 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:05:52,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:05:52,164 INFO L158 Benchmark]: Toolchain (without parser) took 45105.01ms. Allocated memory was 107.0MB in the beginning and 943.7MB in the end (delta: 836.8MB). Free memory was 51.8MB in the beginning and 751.2MB in the end (delta: -699.4MB). Peak memory consumption was 139.2MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,164 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 59.2MB in the beginning and 59.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:05:52,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.07ms. Allocated memory was 107.0MB in the beginning and 151.0MB in the end (delta: 44.0MB). Free memory was 51.7MB in the beginning and 110.0MB in the end (delta: -58.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.42ms. Allocated memory is still 151.0MB. Free memory was 110.0MB in the beginning and 107.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,167 INFO L158 Benchmark]: Boogie Preprocessor took 34.62ms. Allocated memory is still 151.0MB. Free memory was 107.5MB in the beginning and 105.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,167 INFO L158 Benchmark]: RCFGBuilder took 788.79ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 76.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,167 INFO L158 Benchmark]: TraceAbstraction took 43501.33ms. Allocated memory was 151.0MB in the beginning and 943.7MB in the end (delta: 792.7MB). Free memory was 76.0MB in the beginning and 762.7MB in the end (delta: -686.7MB). Peak memory consumption was 107.1MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,168 INFO L158 Benchmark]: Witness Printer took 164.24ms. Allocated memory is still 943.7MB. Free memory was 762.7MB in the beginning and 751.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 16:05:52,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 59.2MB in the beginning and 59.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.07ms. Allocated memory was 107.0MB in the beginning and 151.0MB in the end (delta: 44.0MB). Free memory was 51.7MB in the beginning and 110.0MB in the end (delta: -58.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.42ms. Allocated memory is still 151.0MB. Free memory was 110.0MB in the beginning and 107.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.62ms. Allocated memory is still 151.0MB. Free memory was 107.5MB in the beginning and 105.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 788.79ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 76.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 43501.33ms. Allocated memory was 151.0MB in the beginning and 943.7MB in the end (delta: 792.7MB). Free memory was 76.0MB in the beginning and 762.7MB in the end (delta: -686.7MB). Peak memory consumption was 107.1MB. Max. memory is 16.1GB. * Witness Printer took 164.24ms. Allocated memory is still 943.7MB. Free memory was 762.7MB in the beginning and 751.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 612]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L155] int __SELECTED_FEATURE_base ; [L156] int __SELECTED_FEATURE_highWaterSensor ; [L157] int __SELECTED_FEATURE_lowWaterSensor ; [L158] int __SELECTED_FEATURE_methaneQuery ; [L159] int __SELECTED_FEATURE_methaneAlarm ; [L160] int __SELECTED_FEATURE_stopCommand ; [L161] int __SELECTED_FEATURE_startCommand ; [L162] int __GUIDSL_ROOT_PRODUCTION ; [L200] int pumpRunning = 0; [L201] int systemActive = 1; [L786] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L983] int waterLevel = 1; [L984] int methaneLevelCritical = 0; [L131] int retValue_acc ; [L132] int tmp ; [L136] CALL select_helpers() [L1117] __GUIDSL_ROOT_PRODUCTION = 1 [L136] RET select_helpers() [L137] CALL select_features() [L1102] __SELECTED_FEATURE_base = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1103] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1103] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=16, systemActive=1, waterLevel=1] [L1103] __SELECTED_FEATURE_highWaterSensor = select_one() [L1104] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1104] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1104] __SELECTED_FEATURE_lowWaterSensor = select_one() [L1105] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1105] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1105] __SELECTED_FEATURE_methaneQuery = select_one() [L1106] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1106] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1106] __SELECTED_FEATURE_methaneAlarm = select_one() [L1107] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1107] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1107] __SELECTED_FEATURE_stopCommand = select_one() [L1108] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1108] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=17, systemActive=1, waterLevel=1] [L1108] __SELECTED_FEATURE_startCommand = select_one() [L137] RET select_features() [L138] CALL, EXPR valid_product() [L1122] int retValue_acc ; [L1125] retValue_acc = __SELECTED_FEATURE_base [L1126] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L532] int splverifierCounter ; [L533] int tmp ; [L534] int tmp___0 ; [L535] int tmp___1 ; [L536] int tmp___2 ; [L539] splverifierCounter = 0 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND TRUE \read(tmp) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L553] CALL waterRise() VAL [\old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1001] COND TRUE waterLevel < 2 [L1002] waterLevel = waterLevel + 1 [L553] RET waterRise() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND TRUE \read(__SELECTED_FEATURE_startCommand) [L574] CALL startSystem() [L526] systemActive = 1 [L574] RET startSystem() [L596] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L239] COND TRUE ! pumpRunning [L241] CALL, EXPR isHighWaterLevel() [L470] int retValue_acc ; [L471] int tmp ; [L472] int tmp___0 ; [L476] CALL, EXPR isHighWaterSensorDry() [L1063] int retValue_acc ; [L1066] COND FALSE !(waterLevel < 2) [L1070] retValue_acc = 0 [L1071] return (retValue_acc); [L476] RET, EXPR isHighWaterSensorDry() [L476] tmp = isHighWaterSensorDry() [L478] COND FALSE !(\read(tmp)) [L481] tmp___0 = 1 [L483] retValue_acc = tmp___0 [L484] return (retValue_acc); [L241] RET, EXPR isHighWaterLevel() [L241] tmp = isHighWaterLevel() [L243] COND TRUE \read(tmp) [L245] CALL activatePump() [L392] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L399] CALL activatePump__before__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L367] pumpRunning = 1 [L399] RET activatePump__before__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L245] RET activatePump() [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L222] RET __utac_acc__Specification4_spec__1() [L596] RET timeShift() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND TRUE \read(__SELECTED_FEATURE_startCommand) [L574] CALL startSystem() [L526] systemActive = 1 [L574] RET startSystem() [L596] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L207] COND TRUE \read(pumpRunning) [L209] CALL lowerWaterLevel() [L989] COND TRUE waterLevel > 0 [L990] waterLevel = waterLevel - 1 [L209] RET lowerWaterLevel() [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L239] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L254] FCALL processEnvironment__before__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L222] RET __utac_acc__Specification4_spec__1() [L596] RET timeShift() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND TRUE \read(__SELECTED_FEATURE_startCommand) [L574] CALL startSystem() [L526] systemActive = 1 [L574] RET startSystem() [L596] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L207] COND TRUE \read(pumpRunning) [L209] CALL lowerWaterLevel() [L989] COND TRUE waterLevel > 0 [L990] waterLevel = waterLevel - 1 [L209] RET lowerWaterLevel() [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L239] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L254] FCALL processEnvironment__before__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND TRUE tmp == 0 [L175] CALL, EXPR isPumpRunning() [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___0 = isPumpRunning() [L177] COND TRUE \read(tmp___0) [L179] CALL __automaton_fail() [L612] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=16, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=17, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.3s, OverallIterations: 16, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3259 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3226 mSDsluCounter, 4764 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2759 mSDsCounter, 1570 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4935 IncrementalHoareTripleChecker+Invalid, 6505 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1570 mSolverCounterUnsat, 2005 mSDtfsCounter, 4935 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 806 GetRequests, 604 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8125 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5614occurred in iteration=15, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 15 MinimizatonAttempts, 1295 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1634 NumberOfCodeBlocks, 1634 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1583 ConstructedInterpolants, 0 QuantifiedInterpolants, 3917 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1966 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 878/923 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 16:05:52,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb77202-b63a-41a1-80c3-642ea7e14994/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE