./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 190527f0b5c755657048457e241e1db06174c0bd15c9c37dddb3c55b0e7d73ce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:05:01,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:05:01,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:05:01,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:05:01,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:05:01,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:05:01,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:05:01,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:05:01,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:05:01,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:05:01,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:05:01,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:05:01,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:05:01,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:05:01,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:05:01,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:05:01,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:05:01,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:05:01,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:05:01,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:05:01,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:05:01,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:05:01,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:05:01,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:05:01,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:05:01,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:05:01,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:05:01,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:05:01,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:05:01,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:05:01,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:05:01,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:05:01,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:05:01,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:05:01,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:05:01,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:05:01,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:05:01,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:05:01,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:05:01,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:05:01,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:05:01,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:05:01,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:05:01,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:05:01,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:05:01,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:05:01,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:05:01,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:05:01,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:05:01,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:05:01,329 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:05:01,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:05:01,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:05:01,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:05:01,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:05:01,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:05:01,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:05:01,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:05:01,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:05:01,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:05:01,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:05:01,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:05:01,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:05:01,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:05:01,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:05:01,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:05:01,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:05:01,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:05:01,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:05:01,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:05:01,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:05:01,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:05:01,333 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:05:01,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:05:01,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:05:01,334 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_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 190527f0b5c755657048457e241e1db06174c0bd15c9c37dddb3c55b0e7d73ce [2022-11-20 11:05:01,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:05:01,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:05:01,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:05:01,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:05:01,635 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:05:01,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2022-11-20 11:05:04,727 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:05:05,031 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:05:05,034 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2022-11-20 11:05:05,049 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/data/1b1d23878/26f15e4f3e16415baa14fa3b12f7a808/FLAG469d8b31e [2022-11-20 11:05:05,064 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/data/1b1d23878/26f15e4f3e16415baa14fa3b12f7a808 [2022-11-20 11:05:05,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:05:05,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:05:05,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:05:05,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:05:05,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:05:05,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f82241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05, skipping insertion in model container [2022-11-20 11:05:05,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:05:05,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:05:05,366 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_dbf14876-e8b2-49c2-86f8-c624c392c9d5/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c[17943,17956] [2022-11-20 11:05:05,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:05:05,396 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:05:05,501 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_dbf14876-e8b2-49c2-86f8-c624c392c9d5/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c[17943,17956] [2022-11-20 11:05:05,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:05:05,532 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:05:05,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05 WrapperNode [2022-11-20 11:05:05,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:05:05,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:05:05,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:05:05,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:05:05,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,596 INFO L138 Inliner]: procedures = 54, calls = 96, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 193 [2022-11-20 11:05:05,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:05:05,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:05:05,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:05:05,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:05:05,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,619 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:05:05,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:05:05,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:05:05,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:05:05,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (1/1) ... [2022-11-20 11:05:05,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:05:05,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:05,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:05:05,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:05:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:05:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 11:05:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 11:05:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:05:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:05:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:05:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:05:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 11:05:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 11:05:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:05:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 11:05:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 11:05:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:05:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:05:05,850 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:05:05,869 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:05:06,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:05:06,210 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:05:06,210 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:05:06,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:06 BoogieIcfgContainer [2022-11-20 11:05:06,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:05:06,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:05:06,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:05:06,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:05:06,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:05:05" (1/3) ... [2022-11-20 11:05:06,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8236da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:05:06, skipping insertion in model container [2022-11-20 11:05:06,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:05" (2/3) ... [2022-11-20 11:05:06,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8236da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:05:06, skipping insertion in model container [2022-11-20 11:05:06,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:06" (3/3) ... [2022-11-20 11:05:06,227 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2022-11-20 11:05:06,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:05:06,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:05:06,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:05:06,336 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=PETRI_NET, 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;@601e98d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:05:06,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:05:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:05:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:05:06,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:06,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:06,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1725577786, now seen corresponding path program 1 times [2022-11-20 11:05:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:06,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110680918] [2022-11-20 11:05:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:06,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110680918] [2022-11-20 11:05:06,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110680918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:06,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:06,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:05:06,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062310997] [2022-11-20 11:05:06,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:06,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:05:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:05:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:05:06,674 INFO L87 Difference]: Start difference. First operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:06,751 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2022-11-20 11:05:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:05:06,756 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:05:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:06,767 INFO L225 Difference]: With dead ends: 142 [2022-11-20 11:05:06,768 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 11:05:06,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:05:06,776 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:06,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 11:05:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-20 11:05:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.320754716981132) internal successors, (70), 58 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 11:05:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2022-11-20 11:05:06,839 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 19 [2022-11-20 11:05:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:06,840 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2022-11-20 11:05:06,840 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2022-11-20 11:05:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 11:05:06,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:06,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:06,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:05:06,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1606599487, now seen corresponding path program 1 times [2022-11-20 11:05:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:06,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111930734] [2022-11-20 11:05:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111930734] [2022-11-20 11:05:06,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111930734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:06,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:06,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:05:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201744209] [2022-11-20 11:05:06,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:06,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:06,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:06,935 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:06,952 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2022-11-20 11:05:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:06,953 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 11:05:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:06,954 INFO L225 Difference]: With dead ends: 97 [2022-11-20 11:05:06,954 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:05:06,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:06,957 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:06,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 127 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:05:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-20 11:05:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 52 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:05:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2022-11-20 11:05:06,978 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2022-11-20 11:05:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:06,978 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2022-11-20 11:05:06,978 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2022-11-20 11:05:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:05:06,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:06,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:06,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:05:06,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1615154650, now seen corresponding path program 1 times [2022-11-20 11:05:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:06,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636336155] [2022-11-20 11:05:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:07,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:07,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636336155] [2022-11-20 11:05:07,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636336155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:07,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:07,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:05:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194375087] [2022-11-20 11:05:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:05:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:07,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:05:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:05:07,171 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:07,299 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2022-11-20 11:05:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:05:07,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 11:05:07,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:07,301 INFO L225 Difference]: With dead ends: 107 [2022-11-20 11:05:07,301 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:05:07,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:05:07,303 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 144 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:07,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 150 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:05:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-20 11:05:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 52 states have internal predecessors, (62), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:05:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2022-11-20 11:05:07,315 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 25 [2022-11-20 11:05:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:07,315 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2022-11-20 11:05:07,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2022-11-20 11:05:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:05:07,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:07,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:05:07,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1401083419, now seen corresponding path program 1 times [2022-11-20 11:05:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681454270] [2022-11-20 11:05:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:05:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:07,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:07,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681454270] [2022-11-20 11:05:07,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681454270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:07,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:07,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:05:07,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322324297] [2022-11-20 11:05:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:07,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:07,435 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:05:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:07,474 INFO L93 Difference]: Finished difference Result 143 states and 185 transitions. [2022-11-20 11:05:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-20 11:05:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:07,480 INFO L225 Difference]: With dead ends: 143 [2022-11-20 11:05:07,480 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 11:05:07,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:07,482 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:07,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 11:05:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-20 11:05:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 81 states have internal predecessors, (97), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 11:05:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2022-11-20 11:05:07,516 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 30 [2022-11-20 11:05:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:07,516 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2022-11-20 11:05:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:05:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2022-11-20 11:05:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:05:07,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:07,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:05:07,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 435007003, now seen corresponding path program 1 times [2022-11-20 11:05:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:07,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577384115] [2022-11-20 11:05:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:05:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:07,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:07,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577384115] [2022-11-20 11:05:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577384115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:07,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:07,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:05:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732684443] [2022-11-20 11:05:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:07,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:07,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:07,657 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:05:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:07,707 INFO L93 Difference]: Finished difference Result 249 states and 330 transitions. [2022-11-20 11:05:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-20 11:05:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:07,709 INFO L225 Difference]: With dead ends: 249 [2022-11-20 11:05:07,709 INFO L226 Difference]: Without dead ends: 165 [2022-11-20 11:05:07,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:07,712 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 41 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:07,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 132 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-20 11:05:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2022-11-20 11:05:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 134 states have (on average 1.3059701492537314) internal successors, (175), 144 states have internal predecessors, (175), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-20 11:05:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2022-11-20 11:05:07,736 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 36 [2022-11-20 11:05:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:07,736 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2022-11-20 11:05:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:05:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2022-11-20 11:05:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:05:07,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:07,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:05:07,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1456075357, now seen corresponding path program 1 times [2022-11-20 11:05:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:07,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574959391] [2022-11-20 11:05:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:05:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:07,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574959391] [2022-11-20 11:05:07,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574959391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:07,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:07,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:05:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327850008] [2022-11-20 11:05:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:05:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:05:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:05:07,935 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:05:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:08,167 INFO L93 Difference]: Finished difference Result 399 states and 548 transitions. [2022-11-20 11:05:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:05:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-20 11:05:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:08,174 INFO L225 Difference]: With dead ends: 399 [2022-11-20 11:05:08,174 INFO L226 Difference]: Without dead ends: 243 [2022-11-20 11:05:08,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:05:08,188 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 163 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:08,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 436 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-20 11:05:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 233. [2022-11-20 11:05:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 190 states have (on average 1.2842105263157895) internal successors, (244), 206 states have internal predecessors, (244), 21 states have call successors, (21), 21 states have call predecessors, (21), 21 states have return successors, (39), 21 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-20 11:05:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 304 transitions. [2022-11-20 11:05:08,241 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 304 transitions. Word has length 36 [2022-11-20 11:05:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:08,241 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 304 transitions. [2022-11-20 11:05:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:05:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 304 transitions. [2022-11-20 11:05:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 11:05:08,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:08,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:08,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:05:08,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash -260678510, now seen corresponding path program 1 times [2022-11-20 11:05:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:08,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139977344] [2022-11-20 11:05:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:05:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:05:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:05:08,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139977344] [2022-11-20 11:05:08,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139977344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:08,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:08,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:05:08,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943517752] [2022-11-20 11:05:08,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:05:08,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:08,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:05:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:05:08,461 INFO L87 Difference]: Start difference. First operand 233 states and 304 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:05:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:08,677 INFO L93 Difference]: Finished difference Result 628 states and 837 transitions. [2022-11-20 11:05:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:05:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-11-20 11:05:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:08,681 INFO L225 Difference]: With dead ends: 628 [2022-11-20 11:05:08,681 INFO L226 Difference]: Without dead ends: 402 [2022-11-20 11:05:08,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:05:08,683 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 109 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:08,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 336 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-20 11:05:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 309. [2022-11-20 11:05:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 257 states have (on average 1.2568093385214008) internal successors, (323), 280 states have internal predecessors, (323), 24 states have call successors, (24), 21 states have call predecessors, (24), 27 states have return successors, (47), 24 states have call predecessors, (47), 24 states have call successors, (47) [2022-11-20 11:05:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 394 transitions. [2022-11-20 11:05:08,727 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 394 transitions. Word has length 63 [2022-11-20 11:05:08,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:08,727 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 394 transitions. [2022-11-20 11:05:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:05:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 394 transitions. [2022-11-20 11:05:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 11:05:08,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:08,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:05:08,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash 162968212, now seen corresponding path program 1 times [2022-11-20 11:05:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:08,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036246131] [2022-11-20 11:05:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:05:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:05:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:05:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:08,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036246131] [2022-11-20 11:05:08,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036246131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:08,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:08,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:05:08,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175815774] [2022-11-20 11:05:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:05:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:05:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:05:08,944 INFO L87 Difference]: Start difference. First operand 309 states and 394 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:05:09,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:09,186 INFO L93 Difference]: Finished difference Result 593 states and 763 transitions. [2022-11-20 11:05:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:05:09,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-11-20 11:05:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:09,191 INFO L225 Difference]: With dead ends: 593 [2022-11-20 11:05:09,192 INFO L226 Difference]: Without dead ends: 291 [2022-11-20 11:05:09,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:05:09,194 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 165 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:09,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 314 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-20 11:05:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 269. [2022-11-20 11:05:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.2307692307692308) internal successors, (272), 239 states have internal predecessors, (272), 22 states have call successors, (22), 18 states have call predecessors, (22), 25 states have return successors, (40), 23 states have call predecessors, (40), 22 states have call successors, (40) [2022-11-20 11:05:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 334 transitions. [2022-11-20 11:05:09,250 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 334 transitions. Word has length 63 [2022-11-20 11:05:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:09,251 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 334 transitions. [2022-11-20 11:05:09,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:05:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 334 transitions. [2022-11-20 11:05:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:05:09,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:09,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:09,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:05:09,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 78012080, now seen corresponding path program 1 times [2022-11-20 11:05:09,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817020657] [2022-11-20 11:05:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:09,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:05:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:05:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:05:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:09,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:09,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817020657] [2022-11-20 11:05:09,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817020657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:09,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416101772] [2022-11-20 11:05:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:09,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:09,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:09,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:05:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:09,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:05:09,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:09,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:09,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416101772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:09,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:09,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 10 [2022-11-20 11:05:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131106124] [2022-11-20 11:05:09,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:09,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:05:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:05:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:05:09,967 INFO L87 Difference]: Start difference. First operand 269 states and 334 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:05:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:10,472 INFO L93 Difference]: Finished difference Result 608 states and 807 transitions. [2022-11-20 11:05:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:05:10,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2022-11-20 11:05:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:10,488 INFO L225 Difference]: With dead ends: 608 [2022-11-20 11:05:10,488 INFO L226 Difference]: Without dead ends: 384 [2022-11-20 11:05:10,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:05:10,489 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 263 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:10,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 615 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:05:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-20 11:05:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 342. [2022-11-20 11:05:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 278 states have (on average 1.2302158273381294) internal successors, (342), 300 states have internal predecessors, (342), 31 states have call successors, (31), 27 states have call predecessors, (31), 32 states have return successors, (58), 28 states have call predecessors, (58), 31 states have call successors, (58) [2022-11-20 11:05:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 431 transitions. [2022-11-20 11:05:10,543 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 431 transitions. Word has length 67 [2022-11-20 11:05:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:10,546 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 431 transitions. [2022-11-20 11:05:10,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:05:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 431 transitions. [2022-11-20 11:05:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:05:10,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:10,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:10,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:10,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:10,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -761796008, now seen corresponding path program 2 times [2022-11-20 11:05:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:10,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252405525] [2022-11-20 11:05:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:05:10,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:05:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:05:10,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:05:10,827 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:05:10,828 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:05:10,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:05:10,834 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:10,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:05:10,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:05:10 BoogieIcfgContainer [2022-11-20 11:05:10,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:05:10,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:05:10,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:05:10,944 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:05:10,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:06" (3/4) ... [2022-11-20 11:05:10,946 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:05:11,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:05:11,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:05:11,055 INFO L158 Benchmark]: Toolchain (without parser) took 5987.31ms. Allocated memory was 176.2MB in the beginning and 220.2MB in the end (delta: 44.0MB). Free memory was 135.9MB in the beginning and 146.1MB in the end (delta: -10.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-11-20 11:05:11,058 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:05:11,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.46ms. Allocated memory is still 176.2MB. Free memory was 135.9MB in the beginning and 117.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:05:11,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.35ms. Allocated memory is still 176.2MB. Free memory was 117.0MB in the beginning and 114.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:05:11,059 INFO L158 Benchmark]: Boogie Preprocessor took 25.93ms. Allocated memory is still 176.2MB. Free memory was 114.9MB in the beginning and 113.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:05:11,062 INFO L158 Benchmark]: RCFGBuilder took 588.81ms. Allocated memory is still 176.2MB. Free memory was 113.3MB in the beginning and 98.1MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:05:11,063 INFO L158 Benchmark]: TraceAbstraction took 4728.02ms. Allocated memory was 176.2MB in the beginning and 220.2MB in the end (delta: 44.0MB). Free memory was 97.0MB in the beginning and 153.4MB in the end (delta: -56.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:05:11,063 INFO L158 Benchmark]: Witness Printer took 110.77ms. Allocated memory is still 220.2MB. Free memory was 153.4MB in the beginning and 146.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:05:11,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.46ms. Allocated memory is still 176.2MB. Free memory was 135.9MB in the beginning and 117.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.35ms. Allocated memory is still 176.2MB. Free memory was 117.0MB in the beginning and 114.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.93ms. Allocated memory is still 176.2MB. Free memory was 114.9MB in the beginning and 113.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 588.81ms. Allocated memory is still 176.2MB. Free memory was 113.3MB in the beginning and 98.1MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4728.02ms. Allocated memory was 176.2MB in the beginning and 220.2MB in the end (delta: 44.0MB). Free memory was 97.0MB in the beginning and 153.4MB in the end (delta: -56.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 110.77ms. Allocated memory is still 220.2MB. Free memory was 153.4MB in the beginning and 146.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 934]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L583] int cleanupTimeShifts = 4; [L752] int pumpRunning = 0; [L753] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L659] int retValue_acc ; [L660] int tmp ; [L664] FCALL select_helpers() [L665] FCALL select_features() [L666] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L666] RET, EXPR valid_product() [L666] tmp = valid_product() [L668] COND TRUE \read(tmp) [L670] FCALL setup() [L671] CALL runTest() [L653] CALL test() [L684] int splverifierCounter ; [L685] int tmp ; [L686] int tmp___0 ; [L687] int tmp___1 ; [L688] int tmp___2 ; [L691] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L701] tmp = __VERIFIER_nondet_int() [L703] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L705] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L705] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp___2)) [L729] tmp___1 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L738] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L759] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L766] COND TRUE \read(systemActive) [L768] CALL processEnvironment() [L788] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L791] COND TRUE ! pumpRunning [L793] CALL, EXPR isHighWaterLevel() [L903] int retValue_acc ; [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L909] RET, EXPR isHighWaterSensorDry() [L909] tmp = isHighWaterSensorDry() [L911] COND FALSE !(\read(tmp)) [L914] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L916] retValue_acc = tmp___0 [L917] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L793] RET, EXPR isHighWaterLevel() [L793] tmp = isHighWaterLevel() [L795] COND TRUE \read(tmp) [L797] CALL activatePump() [L822] int tmp ; [L826] CALL, EXPR isMethaneAlarm() [L847] int retValue_acc ; [L851] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L851] RET, EXPR isMethaneLevelCritical() [L851] retValue_acc = isMethaneLevelCritical() [L853] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L826] RET, EXPR isMethaneAlarm() [L826] tmp = isMethaneAlarm() [L828] COND FALSE !(\read(tmp)) [L832] CALL activatePump__wrappee__highWaterSensor() [L816] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L832] RET activatePump__wrappee__highWaterSensor() [L797] RET activatePump() [L768] RET processEnvironment() [L774] CALL __utac_acc__Specification4_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L563] RET, EXPR getWaterLevel() [L563] tmp = getWaterLevel() [L565] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L774] RET __utac_acc__Specification4_spec__1() [L738] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp___2)) [L729] tmp___1 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L738] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L759] COND TRUE \read(pumpRunning) [L761] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L761] RET lowerWaterLevel() [L766] COND TRUE \read(systemActive) [L768] CALL processEnvironment() [L788] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L791] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L806] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L768] RET processEnvironment() [L774] CALL __utac_acc__Specification4_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L563] RET, EXPR getWaterLevel() [L563] tmp = getWaterLevel() [L565] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L774] RET __utac_acc__Specification4_spec__1() [L738] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp___2)) [L729] tmp___1 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L738] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L759] COND TRUE \read(pumpRunning) [L761] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L761] RET lowerWaterLevel() [L766] COND TRUE \read(systemActive) [L768] CALL processEnvironment() [L788] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L791] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L806] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L768] RET processEnvironment() [L774] CALL __utac_acc__Specification4_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L563] RET, EXPR getWaterLevel() [L563] tmp = getWaterLevel() [L565] COND TRUE tmp == 0 [L567] CALL, EXPR isPumpRunning() [L858] int retValue_acc ; [L861] retValue_acc = pumpRunning [L862] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L934] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 957 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 943 mSDsluCounter, 2323 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1634 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 758 IncrementalHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 689 mSDtfsCounter, 758 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 165 SyntacticMatches, 7 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred in iteration=9, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 171 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 518 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 962 SizeOfPredicates, 4 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 72/85 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! [2022-11-20 11:05:11,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf14876-e8b2-49c2-86f8-c624c392c9d5/bin/uautomizer-ug76WZFUDN/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