./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- 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-8393723 [2022-11-19 07:01:43,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:01:43,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:01:43,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:01:43,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:01:43,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:01:43,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:01:43,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:01:43,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:01:43,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:01:43,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:01:43,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:01:43,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:01:43,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:01:43,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:01:43,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:01:43,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:01:43,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:01:43,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:01:43,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:01:43,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:01:43,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:01:43,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:01:43,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:01:43,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:01:43,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:01:43,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:01:43,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:01:43,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:01:43,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:01:43,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:01:43,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:01:43,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:01:43,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:01:43,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:01:43,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:01:43,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:01:43,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:01:43,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:01:43,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:01:43,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:01:43,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:01:43,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:01:43,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:01:43,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:01:43,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:01:43,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:01:43,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:01:43,385 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:01:43,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:01:43,385 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:01:43,386 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:01:43,387 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:01:43,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:01:43,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:01:43,388 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:01:43,388 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:01:43,388 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:01:43,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:01:43,389 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:01:43,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:01:43,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:01:43,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:01:43,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:01:43,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:01:43,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:01:43,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:01:43,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:01:43,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:01:43,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:01:43,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:01:43,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:01:43,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:01:43,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:01:43,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:43,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:01:43,395 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:01:43,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:01:43,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:01:43,396 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:01:43,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:01:43,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:01:43,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:01:43,397 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2022-11-19 07:01:43,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:01:43,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:01:43,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:01:43,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:01:43,769 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:01:43,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-11-19 07:01:43,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/df522976d/94c9ebed773b4abeb26c35ef35a0f9d2/FLAG8e6600e2a [2022-11-19 07:01:44,472 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:01:44,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-11-19 07:01:44,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/df522976d/94c9ebed773b4abeb26c35ef35a0f9d2/FLAG8e6600e2a [2022-11-19 07:01:44,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/df522976d/94c9ebed773b4abeb26c35ef35a0f9d2 [2022-11-19 07:01:44,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:01:44,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:01:44,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:44,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:01:44,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:01:44,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:44" (1/1) ... [2022-11-19 07:01:44,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc94e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:44, skipping insertion in model container [2022-11-19 07:01:44,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:44" (1/1) ... [2022-11-19 07:01:44,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:01:44,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:01:45,414 WARN L234 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-19 07:01:45,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:45,497 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:01:45,598 WARN L234 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-19 07:01:45,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:45,636 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:01:45,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45 WrapperNode [2022-11-19 07:01:45,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:45,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:45,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:01:45,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:01:45,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,736 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 818 [2022-11-19 07:01:45,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:45,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:01:45,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:01:45,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:01:45,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:01:45,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:01:45,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:01:45,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:01:45,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (1/1) ... [2022-11-19 07:01:45,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:45,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:45,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:01:45,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:01:45,976 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-19 07:01:45,976 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-19 07:01:45,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:01:45,976 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-19 07:01:45,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-19 07:01:45,976 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-19 07:01:45,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-19 07:01:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-19 07:01:45,977 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-19 07:01:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-19 07:01:45,977 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-19 07:01:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-19 07:01:45,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-19 07:01:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-19 07:01:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-19 07:01:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-19 07:01:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-19 07:01:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:01:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:01:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:01:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:01:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-19 07:01:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-19 07:01:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-19 07:01:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-19 07:01:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-19 07:01:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-19 07:01:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-19 07:01:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-19 07:01:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-19 07:01:45,980 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-19 07:01:45,980 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-19 07:01:45,980 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-19 07:01:45,980 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-19 07:01:45,980 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-19 07:01:45,980 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-19 07:01:45,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-19 07:01:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-19 07:01:45,981 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-19 07:01:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:01:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-19 07:01:45,981 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-19 07:01:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-19 07:01:45,982 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-19 07:01:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-19 07:01:45,982 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-19 07:01:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-19 07:01:45,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-19 07:01:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:01:45,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:01:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:01:45,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:01:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-19 07:01:45,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-19 07:01:46,124 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:01:46,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:01:47,376 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:01:48,240 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:01:48,240 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:01:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:48 BoogieIcfgContainer [2022-11-19 07:01:48,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:01:48,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:01:48,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:01:48,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:01:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:01:44" (1/3) ... [2022-11-19 07:01:48,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ade228c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:48, skipping insertion in model container [2022-11-19 07:01:48,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:45" (2/3) ... [2022-11-19 07:01:48,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ade228c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:48, skipping insertion in model container [2022-11-19 07:01:48,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:48" (3/3) ... [2022-11-19 07:01:48,256 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2022-11-19 07:01:48,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:01:48,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:01:48,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:01:48,382 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d36a12e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:01:48,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:01:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 282 states have (on average 1.599290780141844) internal successors, (451), 300 states have internal predecessors, (451), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-19 07:01:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 07:01:48,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:48,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:48,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash 5537700, now seen corresponding path program 1 times [2022-11-19 07:01:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:48,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483793383] [2022-11-19 07:01:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:01:49,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:49,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483793383] [2022-11-19 07:01:49,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483793383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:49,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:49,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:01:49,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879816418] [2022-11-19 07:01:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:49,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:49,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:49,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:49,714 INFO L87 Difference]: Start difference. First operand has 409 states, 282 states have (on average 1.599290780141844) internal successors, (451), 300 states have internal predecessors, (451), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 07:01:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:50,461 INFO L93 Difference]: Finished difference Result 1204 states and 1950 transitions. [2022-11-19 07:01:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:01:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 82 [2022-11-19 07:01:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:50,492 INFO L225 Difference]: With dead ends: 1204 [2022-11-19 07:01:50,493 INFO L226 Difference]: Without dead ends: 800 [2022-11-19 07:01:50,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:01:50,514 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 1011 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:50,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 4449 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:01:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-19 07:01:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 784. [2022-11-19 07:01:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 549 states have (on average 1.5810564663023678) internal successors, (868), 576 states have internal predecessors, (868), 188 states have call successors, (188), 47 states have call predecessors, (188), 46 states have return successors, (193), 185 states have call predecessors, (193), 184 states have call successors, (193) [2022-11-19 07:01:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1249 transitions. [2022-11-19 07:01:50,686 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1249 transitions. Word has length 82 [2022-11-19 07:01:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:50,687 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1249 transitions. [2022-11-19 07:01:50,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 07:01:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1249 transitions. [2022-11-19 07:01:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:01:50,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:50,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:50,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:01:50,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1875561754, now seen corresponding path program 1 times [2022-11-19 07:01:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:50,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042604098] [2022-11-19 07:01:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:01:52,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:52,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042604098] [2022-11-19 07:01:52,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042604098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:52,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:52,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296364272] [2022-11-19 07:01:52,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:52,183 INFO L87 Difference]: Start difference. First operand 784 states and 1249 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 07:01:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:53,970 INFO L93 Difference]: Finished difference Result 3051 states and 4958 transitions. [2022-11-19 07:01:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:53,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 87 [2022-11-19 07:01:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:53,987 INFO L225 Difference]: With dead ends: 3051 [2022-11-19 07:01:53,988 INFO L226 Difference]: Without dead ends: 2282 [2022-11-19 07:01:54,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:54,015 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 1186 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:54,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 3076 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:01:54,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-11-19 07:01:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1968. [2022-11-19 07:01:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1429 states have (on average 1.5612316305108467) internal successors, (2231), 1481 states have internal predecessors, (2231), 422 states have call successors, (422), 117 states have call predecessors, (422), 116 states have return successors, (492), 407 states have call predecessors, (492), 414 states have call successors, (492) [2022-11-19 07:01:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 3145 transitions. [2022-11-19 07:01:54,217 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 3145 transitions. Word has length 87 [2022-11-19 07:01:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:54,218 INFO L495 AbstractCegarLoop]: Abstraction has 1968 states and 3145 transitions. [2022-11-19 07:01:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 07:01:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 3145 transitions. [2022-11-19 07:01:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-19 07:01:54,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:54,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:54,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:01:54,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1759243421, now seen corresponding path program 1 times [2022-11-19 07:01:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84258047] [2022-11-19 07:01:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:54,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:01:54,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:54,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84258047] [2022-11-19 07:01:54,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84258047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:54,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:54,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:01:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700074059] [2022-11-19 07:01:54,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:54,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:54,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:54,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:54,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:54,551 INFO L87 Difference]: Start difference. First operand 1968 states and 3145 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:01:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:54,933 INFO L93 Difference]: Finished difference Result 3091 states and 4974 transitions. [2022-11-19 07:01:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:01:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-11-19 07:01:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:54,981 INFO L225 Difference]: With dead ends: 3091 [2022-11-19 07:01:54,982 INFO L226 Difference]: Without dead ends: 2099 [2022-11-19 07:01:54,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:54,999 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 32 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:55,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3776 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2022-11-19 07:01:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2063. [2022-11-19 07:01:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 1496 states have (on average 1.5481283422459893) internal successors, (2316), 1549 states have internal predecessors, (2316), 434 states have call successors, (434), 117 states have call predecessors, (434), 132 states have return successors, (559), 434 states have call predecessors, (559), 426 states have call successors, (559) [2022-11-19 07:01:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 3309 transitions. [2022-11-19 07:01:55,254 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 3309 transitions. Word has length 86 [2022-11-19 07:01:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:55,255 INFO L495 AbstractCegarLoop]: Abstraction has 2063 states and 3309 transitions. [2022-11-19 07:01:55,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:01:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 3309 transitions. [2022-11-19 07:01:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:01:55,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:55,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:55,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:01:55,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1201600250, now seen corresponding path program 1 times [2022-11-19 07:01:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:55,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104359271] [2022-11-19 07:01:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:55,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:01:55,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:55,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104359271] [2022-11-19 07:01:55,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104359271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:55,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:55,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:01:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076965490] [2022-11-19 07:01:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:55,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:55,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:55,615 INFO L87 Difference]: Start difference. First operand 2063 states and 3309 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:01:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:55,979 INFO L93 Difference]: Finished difference Result 3193 states and 5130 transitions. [2022-11-19 07:01:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:01:55,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-11-19 07:01:55,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:56,000 INFO L225 Difference]: With dead ends: 3193 [2022-11-19 07:01:56,000 INFO L226 Difference]: Without dead ends: 2132 [2022-11-19 07:01:56,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:56,016 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 31 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:56,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3795 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-11-19 07:01:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2070. [2022-11-19 07:01:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1503 states have (on average 1.5455755156353959) internal successors, (2323), 1549 states have internal predecessors, (2323), 434 states have call successors, (434), 117 states have call predecessors, (434), 132 states have return successors, (559), 441 states have call predecessors, (559), 426 states have call successors, (559) [2022-11-19 07:01:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3316 transitions. [2022-11-19 07:01:56,222 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3316 transitions. Word has length 87 [2022-11-19 07:01:56,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:56,223 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 3316 transitions. [2022-11-19 07:01:56,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:01:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3316 transitions. [2022-11-19 07:01:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:01:56,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:56,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:56,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:01:56,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:56,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1617245847, now seen corresponding path program 1 times [2022-11-19 07:01:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:56,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784865669] [2022-11-19 07:01:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:01:56,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784865669] [2022-11-19 07:01:56,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784865669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:56,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:56,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660150005] [2022-11-19 07:01:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:56,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:56,511 INFO L87 Difference]: Start difference. First operand 2070 states and 3316 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:01:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:57,665 INFO L93 Difference]: Finished difference Result 4535 states and 7325 transitions. [2022-11-19 07:01:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:01:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 93 [2022-11-19 07:01:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:57,686 INFO L225 Difference]: With dead ends: 4535 [2022-11-19 07:01:57,686 INFO L226 Difference]: Without dead ends: 3111 [2022-11-19 07:01:57,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:57,705 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 1146 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:57,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 2136 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:01:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-11-19 07:01:58,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3070. [2022-11-19 07:01:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 2199 states have (on average 1.4943155979990905) internal successors, (3286), 2271 states have internal predecessors, (3286), 651 states have call successors, (651), 194 states have call predecessors, (651), 219 states have return successors, (882), 662 states have call predecessors, (882), 640 states have call successors, (882) [2022-11-19 07:01:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 4819 transitions. [2022-11-19 07:01:58,048 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 4819 transitions. Word has length 93 [2022-11-19 07:01:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:58,050 INFO L495 AbstractCegarLoop]: Abstraction has 3070 states and 4819 transitions. [2022-11-19 07:01:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:01:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 4819 transitions. [2022-11-19 07:01:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 07:01:58,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:58,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:58,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:01:58,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1301135404, now seen corresponding path program 1 times [2022-11-19 07:01:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:58,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853832930] [2022-11-19 07:01:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:58,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:01:58,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:58,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853832930] [2022-11-19 07:01:58,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853832930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:58,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:58,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199281659] [2022-11-19 07:01:58,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:58,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:58,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:58,409 INFO L87 Difference]: Start difference. First operand 3070 states and 4819 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:01:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:59,171 INFO L93 Difference]: Finished difference Result 5309 states and 8380 transitions. [2022-11-19 07:01:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:59,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2022-11-19 07:01:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:59,195 INFO L225 Difference]: With dead ends: 5309 [2022-11-19 07:01:59,195 INFO L226 Difference]: Without dead ends: 3111 [2022-11-19 07:01:59,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:59,214 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 519 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:59,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2839 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:01:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-11-19 07:01:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3086. [2022-11-19 07:01:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 2208 states have (on average 1.4923007246376812) internal successors, (3295), 2284 states have internal predecessors, (3295), 655 states have call successors, (655), 197 states have call predecessors, (655), 222 states have return successors, (893), 662 states have call predecessors, (893), 644 states have call successors, (893) [2022-11-19 07:01:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4843 transitions. [2022-11-19 07:01:59,474 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4843 transitions. Word has length 95 [2022-11-19 07:01:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:59,475 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 4843 transitions. [2022-11-19 07:01:59,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:01:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4843 transitions. [2022-11-19 07:01:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-19 07:01:59,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:59,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:01:59,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2045698277, now seen corresponding path program 1 times [2022-11-19 07:01:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:59,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118791991] [2022-11-19 07:01:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:59,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:01:59,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:59,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118791991] [2022-11-19 07:01:59,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118791991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647603841] [2022-11-19 07:01:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:59,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:59,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:59,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:59,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:02:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:00,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:02:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:02:00,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:02:00,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647603841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:00,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:02:00,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-19 07:02:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19938434] [2022-11-19 07:02:00,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:02:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:02:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:02:00,142 INFO L87 Difference]: Start difference. First operand 3086 states and 4843 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:02:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:00,563 INFO L93 Difference]: Finished difference Result 6211 states and 9938 transitions. [2022-11-19 07:02:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:02:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2022-11-19 07:02:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:00,586 INFO L225 Difference]: With dead ends: 6211 [2022-11-19 07:02:00,586 INFO L226 Difference]: Without dead ends: 3140 [2022-11-19 07:02:00,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:02:00,614 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 85 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:00,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1689 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:02:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2022-11-19 07:02:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140. [2022-11-19 07:02:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 2253 states have (on average 1.486462494451842) internal successors, (3349), 2329 states have internal predecessors, (3349), 655 states have call successors, (655), 206 states have call predecessors, (655), 231 states have return successors, (893), 662 states have call predecessors, (893), 644 states have call successors, (893) [2022-11-19 07:02:00,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4897 transitions. [2022-11-19 07:02:00,937 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4897 transitions. Word has length 99 [2022-11-19 07:02:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:00,938 INFO L495 AbstractCegarLoop]: Abstraction has 3140 states and 4897 transitions. [2022-11-19 07:02:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:02:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4897 transitions. [2022-11-19 07:02:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:02:00,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:00,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:00,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:01,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:02:01,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 392584210, now seen corresponding path program 1 times [2022-11-19 07:02:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:01,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103633260] [2022-11-19 07:02:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:02:01,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103633260] [2022-11-19 07:02:01,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103633260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749233110] [2022-11-19 07:02:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:01,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:01,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:01,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:01,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:02:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:01,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:02:01,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:02:01,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:02:01,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749233110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:01,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:02:01,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-19 07:02:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441324210] [2022-11-19 07:02:01,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:01,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:02:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:02:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:02:01,795 INFO L87 Difference]: Start difference. First operand 3140 states and 4897 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:02:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:02,242 INFO L93 Difference]: Finished difference Result 6292 states and 9956 transitions. [2022-11-19 07:02:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:02:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2022-11-19 07:02:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:02,267 INFO L225 Difference]: With dead ends: 6292 [2022-11-19 07:02:02,267 INFO L226 Difference]: Without dead ends: 3131 [2022-11-19 07:02:02,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:02:02,298 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 91 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:02,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1685 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:02:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-11-19 07:02:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3131. [2022-11-19 07:02:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2244 states have (on average 1.4763814616755793) internal successors, (3313), 2320 states have internal predecessors, (3313), 655 states have call successors, (655), 206 states have call predecessors, (655), 231 states have return successors, (893), 662 states have call predecessors, (893), 644 states have call successors, (893) [2022-11-19 07:02:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4861 transitions. [2022-11-19 07:02:02,576 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4861 transitions. Word has length 101 [2022-11-19 07:02:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:02,577 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 4861 transitions. [2022-11-19 07:02:02,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:02:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4861 transitions. [2022-11-19 07:02:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:02:02,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:02,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:02,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:02,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:02:02,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:02,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:02,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1194234044, now seen corresponding path program 1 times [2022-11-19 07:02:02,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:02,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107105375] [2022-11-19 07:02:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:02:03,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:03,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107105375] [2022-11-19 07:02:03,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107105375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:03,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17090731] [2022-11-19 07:02:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:03,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:03,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:03,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:03,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:02:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:03,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:02:03,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:02:03,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:02:03,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17090731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:03,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:02:03,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:02:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098465567] [2022-11-19 07:02:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:03,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:02:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:02:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:02:03,453 INFO L87 Difference]: Start difference. First operand 3131 states and 4861 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:02:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:04,769 INFO L93 Difference]: Finished difference Result 8109 states and 13165 transitions. [2022-11-19 07:02:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:02:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 102 [2022-11-19 07:02:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:04,824 INFO L225 Difference]: With dead ends: 8109 [2022-11-19 07:02:04,824 INFO L226 Difference]: Without dead ends: 4993 [2022-11-19 07:02:04,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:02:04,857 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 623 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:04,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 2000 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:02:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-11-19 07:02:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4931. [2022-11-19 07:02:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4931 states, 3556 states have (on average 1.4569741282339708) internal successors, (5181), 3678 states have internal predecessors, (5181), 1011 states have call successors, (1011), 324 states have call predecessors, (1011), 363 states have return successors, (1624), 1022 states have call predecessors, (1624), 994 states have call successors, (1624) [2022-11-19 07:02:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4931 states to 4931 states and 7816 transitions. [2022-11-19 07:02:05,337 INFO L78 Accepts]: Start accepts. Automaton has 4931 states and 7816 transitions. Word has length 102 [2022-11-19 07:02:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:05,338 INFO L495 AbstractCegarLoop]: Abstraction has 4931 states and 7816 transitions. [2022-11-19 07:02:05,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:02:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4931 states and 7816 transitions. [2022-11-19 07:02:05,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 07:02:05,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:05,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:05,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:05,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1329618626, now seen corresponding path program 1 times [2022-11-19 07:02:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:05,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442962387] [2022-11-19 07:02:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:05,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:02:05,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:05,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442962387] [2022-11-19 07:02:05,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442962387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:05,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641906066] [2022-11-19 07:02:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:05,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:05,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:05,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:05,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:02:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:06,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:02:06,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:02:06,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:02:06,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641906066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:06,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:02:06,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-19 07:02:06,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171680787] [2022-11-19 07:02:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:06,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:02:06,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:02:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:02:06,372 INFO L87 Difference]: Start difference. First operand 4931 states and 7816 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:02:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:07,696 INFO L93 Difference]: Finished difference Result 11020 states and 18004 transitions. [2022-11-19 07:02:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:02:07,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 103 [2022-11-19 07:02:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:07,757 INFO L225 Difference]: With dead ends: 11020 [2022-11-19 07:02:07,758 INFO L226 Difference]: Without dead ends: 6104 [2022-11-19 07:02:07,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:02:07,789 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 701 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:07,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 3257 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:02:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2022-11-19 07:02:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 6080. [2022-11-19 07:02:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 4412 states have (on average 1.4320036264732547) internal successors, (6318), 4548 states have internal predecessors, (6318), 1174 states have call successors, (1174), 449 states have call predecessors, (1174), 493 states have return successors, (2598), 1175 states have call predecessors, (2598), 1145 states have call successors, (2598) [2022-11-19 07:02:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 10090 transitions. [2022-11-19 07:02:08,599 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 10090 transitions. Word has length 103 [2022-11-19 07:02:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:08,600 INFO L495 AbstractCegarLoop]: Abstraction has 6080 states and 10090 transitions. [2022-11-19 07:02:08,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:02:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 10090 transitions. [2022-11-19 07:02:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 07:02:08,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:08,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:08,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:02:08,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash -847151, now seen corresponding path program 1 times [2022-11-19 07:02:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:08,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793258889] [2022-11-19 07:02:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:02:08,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793258889] [2022-11-19 07:02:08,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793258889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453528281] [2022-11-19 07:02:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:08,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:08,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:08,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:02:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:09,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:02:09,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:02:09,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:02:09,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453528281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:09,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:02:09,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-19 07:02:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587587675] [2022-11-19 07:02:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:02:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:02:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:02:09,352 INFO L87 Difference]: Start difference. First operand 6080 states and 10090 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:02:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:10,024 INFO L93 Difference]: Finished difference Result 11905 states and 20369 transitions. [2022-11-19 07:02:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:02:10,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2022-11-19 07:02:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:10,059 INFO L225 Difference]: With dead ends: 11905 [2022-11-19 07:02:10,059 INFO L226 Difference]: Without dead ends: 5678 [2022-11-19 07:02:10,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:02:10,120 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 5 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:10,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1189 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:02:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2022-11-19 07:02:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 5479. [2022-11-19 07:02:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5479 states, 3922 states have (on average 1.4280979092299848) internal successors, (5601), 4050 states have internal predecessors, (5601), 1109 states have call successors, (1109), 413 states have call predecessors, (1109), 447 states have return successors, (2203), 1108 states have call predecessors, (2203), 1084 states have call successors, (2203) [2022-11-19 07:02:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 8913 transitions. [2022-11-19 07:02:10,568 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 8913 transitions. Word has length 107 [2022-11-19 07:02:10,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:10,569 INFO L495 AbstractCegarLoop]: Abstraction has 5479 states and 8913 transitions. [2022-11-19 07:02:10,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:02:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 8913 transitions. [2022-11-19 07:02:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-19 07:02:10,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:10,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:10,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:10,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 07:02:10,784 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1709104290, now seen corresponding path program 1 times [2022-11-19 07:02:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:10,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129353699] [2022-11-19 07:02:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:02:11,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:11,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129353699] [2022-11-19 07:02:11,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129353699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:11,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137899177] [2022-11-19 07:02:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:11,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:11,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:11,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:02:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:11,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:02:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:02:11,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:02:11,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137899177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:11,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263410061] [2022-11-19 07:02:11,878 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-19 07:02:11,878 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:02:11,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:02:11,888 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:02:11,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:02:18,904 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 572 for LOIs [2022-11-19 07:02:20,609 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 437 for LOIs [2022-11-19 07:02:20,677 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 540 for LOIs [2022-11-19 07:02:24,026 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 788 for LOIs [2022-11-19 07:02:31,410 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 637 for LOIs [2022-11-19 07:02:32,156 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:02:43,992 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 637 DAG size of output: 573 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:51,629 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 677 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:10,930 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 788 DAG size of output: 654 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:28,029 WARN L233 SmtUtils]: Spent 16.58s on a formula simplification. DAG size of input: 844 DAG size of output: 752 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:00,479 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 612 DAG size of output: 584 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:06,545 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 621 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:06,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1263410061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:06,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:04:06,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [5, 6, 7] total 32 [2022-11-19 07:04:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250953290] [2022-11-19 07:04:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:06,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:04:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:06,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:04:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-11-19 07:04:06,562 INFO L87 Difference]: Start difference. First operand 5479 states and 8913 transitions. Second operand has 20 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-19 07:04:22,935 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 679 DAG size of output: 547 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:33,746 WARN L233 SmtUtils]: Spent 10.44s on a formula simplification. DAG size of input: 752 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:39,417 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 594 DAG size of output: 576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:13,464 INFO L93 Difference]: Finished difference Result 10981 states and 17875 transitions. [2022-11-19 07:05:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 07:05:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 110 [2022-11-19 07:05:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:13,499 INFO L225 Difference]: With dead ends: 10981 [2022-11-19 07:05:13,499 INFO L226 Difference]: Without dead ends: 5525 [2022-11-19 07:05:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 125.4s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:05:13,537 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 40 mSDsluCounter, 4803 mSDsCounter, 0 mSdLazyCounter, 5373 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:13,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5427 Invalid, 5387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 5373 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2022-11-19 07:05:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2022-11-19 07:05:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5499. [2022-11-19 07:05:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 3938 states have (on average 1.4268664296597258) internal successors, (5619), 4065 states have internal predecessors, (5619), 1111 states have call successors, (1111), 415 states have call predecessors, (1111), 449 states have return successors, (2205), 1111 states have call predecessors, (2205), 1086 states have call successors, (2205) [2022-11-19 07:05:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 8935 transitions. [2022-11-19 07:05:14,099 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 8935 transitions. Word has length 110 [2022-11-19 07:05:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:14,100 INFO L495 AbstractCegarLoop]: Abstraction has 5499 states and 8935 transitions. [2022-11-19 07:05:14,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-19 07:05:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 8935 transitions. [2022-11-19 07:05:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-19 07:05:14,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:14,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:14,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:14,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:14,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash -710375837, now seen corresponding path program 1 times [2022-11-19 07:05:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:14,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035839643] [2022-11-19 07:05:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:05:14,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:14,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035839643] [2022-11-19 07:05:14,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035839643] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:14,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095300138] [2022-11-19 07:05:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:14,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:14,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:14,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:14,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:05:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:14,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:05:14,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:05:14,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:14,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095300138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:14,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:05:14,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:05:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970198182] [2022-11-19 07:05:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:14,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:05:14,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:05:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:05:14,893 INFO L87 Difference]: Start difference. First operand 5499 states and 8935 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:05:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:15,890 INFO L93 Difference]: Finished difference Result 11386 states and 19601 transitions. [2022-11-19 07:05:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:05:15,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2022-11-19 07:05:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:15,926 INFO L225 Difference]: With dead ends: 11386 [2022-11-19 07:05:15,926 INFO L226 Difference]: Without dead ends: 6539 [2022-11-19 07:05:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:05:15,971 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 252 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:15,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 2567 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:05:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2022-11-19 07:05:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6323. [2022-11-19 07:05:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6323 states, 4401 states have (on average 1.4314928425357873) internal successors, (6300), 4639 states have internal predecessors, (6300), 1454 states have call successors, (1454), 415 states have call predecessors, (1454), 467 states have return successors, (2858), 1433 states have call predecessors, (2858), 1429 states have call successors, (2858) [2022-11-19 07:05:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6323 states to 6323 states and 10612 transitions. [2022-11-19 07:05:16,650 INFO L78 Accepts]: Start accepts. Automaton has 6323 states and 10612 transitions. Word has length 112 [2022-11-19 07:05:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:16,652 INFO L495 AbstractCegarLoop]: Abstraction has 6323 states and 10612 transitions. [2022-11-19 07:05:16,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:05:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6323 states and 10612 transitions. [2022-11-19 07:05:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 07:05:16,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:16,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:16,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:16,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:05:16,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1164924802, now seen corresponding path program 1 times [2022-11-19 07:05:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:16,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745676189] [2022-11-19 07:05:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:05:17,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745676189] [2022-11-19 07:05:17,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745676189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876603611] [2022-11-19 07:05:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:17,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:17,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:17,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:05:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:17,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:05:17,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:05:17,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:05:17,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876603611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [716046628] [2022-11-19 07:05:17,739 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2022-11-19 07:05:17,739 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:05:17,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:05:17,740 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:05:17,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:05:21,941 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 572 for LOIs [2022-11-19 07:06:07,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:06:07,536 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:06:07,541 INFO L158 Benchmark]: Toolchain (without parser) took 262823.55ms. Allocated memory was 86.0MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 64.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-19 07:06:07,541 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:06:07,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 915.82ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 64.2MB in the beginning and 58.8MB in the end (delta: 5.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-11-19 07:06:07,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.51ms. Allocated memory is still 109.1MB. Free memory was 58.8MB in the beginning and 53.8MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:06:07,542 INFO L158 Benchmark]: Boogie Preprocessor took 114.39ms. Allocated memory is still 109.1MB. Free memory was 53.7MB in the beginning and 47.9MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:06:07,542 INFO L158 Benchmark]: RCFGBuilder took 2394.12ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 47.9MB in the beginning and 72.1MB in the end (delta: -24.2MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-11-19 07:06:07,542 INFO L158 Benchmark]: TraceAbstraction took 259290.86ms. Allocated memory was 138.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 72.1MB in the beginning and 1.1GB in the end (delta: -999.4MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-19 07:06:07,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 915.82ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 64.2MB in the beginning and 58.8MB in the end (delta: 5.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.51ms. Allocated memory is still 109.1MB. Free memory was 58.8MB in the beginning and 53.8MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.39ms. Allocated memory is still 109.1MB. Free memory was 53.7MB in the beginning and 47.9MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2394.12ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 47.9MB in the beginning and 72.1MB in the end (delta: -24.2MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * TraceAbstraction took 259290.86ms. Allocated memory was 138.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 72.1MB in the beginning and 1.1GB in the end (delta: -999.4MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:06:07,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- 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-8393723 [2022-11-19 07:06:10,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:06:10,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:06:10,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:06:10,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:06:10,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:06:10,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:06:10,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:06:10,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:06:10,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:06:10,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:06:10,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:06:10,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:06:10,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:06:10,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:06:10,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:06:10,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:06:10,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:06:10,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:06:10,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:06:10,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:06:10,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:06:10,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:06:10,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:06:10,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:06:10,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:06:10,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:06:10,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:06:10,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:06:10,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:06:10,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:06:10,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:06:10,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:06:10,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:06:10,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:06:10,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:06:10,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:06:10,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:06:10,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:06:10,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:06:10,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:06:10,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:06:10,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:06:10,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:06:10,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:06:10,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:06:10,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:06:10,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:06:10,214 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:06:10,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:06:10,214 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:06:10,214 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:06:10,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:06:10,215 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:06:10,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:06:10,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:06:10,217 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:06:10,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:06:10,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:06:10,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:06:10,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:06:10,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:06:10,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:06:10,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:06:10,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:06:10,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:06:10,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:06:10,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:06:10,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:06:10,220 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:06:10,220 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:06:10,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:06:10,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:06:10,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:06:10,221 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2022-11-19 07:06:10,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:06:10,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:06:10,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:06:10,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:06:10,658 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:06:10,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-11-19 07:06:10,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/a20a09386/a3eb42fac354423294772942814d11ca/FLAGd4433eb71 [2022-11-19 07:06:11,415 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:06:11,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-11-19 07:06:11,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/a20a09386/a3eb42fac354423294772942814d11ca/FLAGd4433eb71 [2022-11-19 07:06:11,627 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/data/a20a09386/a3eb42fac354423294772942814d11ca [2022-11-19 07:06:11,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:06:11,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:06:11,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:06:11,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:06:11,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:06:11,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:11" (1/1) ... [2022-11-19 07:06:11,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1f5521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:11, skipping insertion in model container [2022-11-19 07:06:11,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:11" (1/1) ... [2022-11-19 07:06:11,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:06:11,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:06:12,337 WARN L234 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-19 07:06:12,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:06:12,393 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:06:12,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:06:12,527 WARN L234 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-19 07:06:12,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:06:12,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:06:12,665 WARN L234 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_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-19 07:06:12,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:06:12,709 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:06:12,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12 WrapperNode [2022-11-19 07:06:12,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:06:12,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:06:12,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:06:12,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:06:12,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,803 INFO L138 Inliner]: procedures = 92, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 767 [2022-11-19 07:06:12,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:06:12,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:06:12,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:06:12,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:06:12,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:06:12,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:06:12,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:06:12,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:06:12,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (1/1) ... [2022-11-19 07:06:12,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:06:12,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:12,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:06:12,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:06:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-19 07:06:13,026 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-19 07:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-19 07:06:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-19 07:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-19 07:06:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-19 07:06:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-19 07:06:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-19 07:06:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-19 07:06:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-19 07:06:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-19 07:06:13,029 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-19 07:06:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-19 07:06:13,029 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-19 07:06:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-19 07:06:13,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-19 07:06:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:06:13,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:06:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:06:13,030 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:06:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-19 07:06:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-19 07:06:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-19 07:06:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-19 07:06:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-19 07:06:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-19 07:06:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-19 07:06:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-19 07:06:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:06:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-19 07:06:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-19 07:06:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-19 07:06:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-19 07:06:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-19 07:06:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-19 07:06:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-19 07:06:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-19 07:06:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-19 07:06:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-19 07:06:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-19 07:06:13,036 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-19 07:06:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-19 07:06:13,036 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-19 07:06:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-19 07:06:13,038 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-19 07:06:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-19 07:06:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-19 07:06:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:06:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:06:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:06:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:06:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-19 07:06:13,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-19 07:06:13,290 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:06:13,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:06:15,107 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:06:15,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:06:15,128 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:06:15,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:15 BoogieIcfgContainer [2022-11-19 07:06:15,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:06:15,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:06:15,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:06:15,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:06:15,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:06:11" (1/3) ... [2022-11-19 07:06:15,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7710be87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:15, skipping insertion in model container [2022-11-19 07:06:15,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:12" (2/3) ... [2022-11-19 07:06:15,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7710be87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:15, skipping insertion in model container [2022-11-19 07:06:15,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:15" (3/3) ... [2022-11-19 07:06:15,142 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2022-11-19 07:06:15,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:06:15,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:06:15,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:06:15,263 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76bd9249, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:06:15,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:06:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-19 07:06:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:06:15,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:15,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:15,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:15,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash -525274672, now seen corresponding path program 1 times [2022-11-19 07:06:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:15,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109429054] [2022-11-19 07:06:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:15,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:15,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:15,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:15,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:06:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:06:15,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:06:15,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:15,913 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109429054] [2022-11-19 07:06:15,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109429054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:15,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:15,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:06:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696741792] [2022-11-19 07:06:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:15,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:06:15,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:06:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:06:15,953 INFO L87 Difference]: Start difference. First operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:16,074 INFO L93 Difference]: Finished difference Result 1162 states and 1957 transitions. [2022-11-19 07:06:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:06:16,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-11-19 07:06:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:16,101 INFO L225 Difference]: With dead ends: 1162 [2022-11-19 07:06:16,108 INFO L226 Difference]: Without dead ends: 582 [2022-11-19 07:06:16,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:06:16,125 INFO L413 NwaCegarLoop]: 975 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, 975 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 [2022-11-19 07:06:16,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:06:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-19 07:06:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-11-19 07:06:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 458 states have (on average 1.6746724890829694) internal successors, (767), 474 states have internal predecessors, (767), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-19 07:06:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 964 transitions. [2022-11-19 07:06:16,289 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 964 transitions. Word has length 114 [2022-11-19 07:06:16,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:16,294 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 964 transitions. [2022-11-19 07:06:16,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 964 transitions. [2022-11-19 07:06:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:06:16,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:16,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:16,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:16,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:16,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash 281689968, now seen corresponding path program 1 times [2022-11-19 07:06:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:16,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408785879] [2022-11-19 07:06:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:16,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:16,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:16,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:16,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:06:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:16,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:06:16,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:06:16,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:16,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:16,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408785879] [2022-11-19 07:06:16,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408785879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:16,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:16,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597037564] [2022-11-19 07:06:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:16,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:16,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:16,999 INFO L87 Difference]: Start difference. First operand 582 states and 964 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:17,184 INFO L93 Difference]: Finished difference Result 1160 states and 1928 transitions. [2022-11-19 07:06:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:06:17,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-11-19 07:06:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:17,189 INFO L225 Difference]: With dead ends: 1160 [2022-11-19 07:06:17,190 INFO L226 Difference]: Without dead ends: 586 [2022-11-19 07:06:17,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:17,195 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 15 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:17,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2838 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:06:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-19 07:06:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-11-19 07:06:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 461 states have (on average 1.6702819956616053) internal successors, (770), 477 states have internal predecessors, (770), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-19 07:06:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 967 transitions. [2022-11-19 07:06:17,255 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 967 transitions. Word has length 114 [2022-11-19 07:06:17,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:17,262 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 967 transitions. [2022-11-19 07:06:17,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 967 transitions. [2022-11-19 07:06:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 07:06:17,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:17,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:17,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:17,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:17,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1996051294, now seen corresponding path program 1 times [2022-11-19 07:06:17,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:17,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592380489] [2022-11-19 07:06:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:17,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:17,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:17,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:17,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:06:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:17,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:17,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:18,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:18,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592380489] [2022-11-19 07:06:18,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592380489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:18,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:18,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:18,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789358095] [2022-11-19 07:06:18,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:18,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:18,076 INFO L87 Difference]: Start difference. First operand 586 states and 967 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:18,378 INFO L93 Difference]: Finished difference Result 1184 states and 1959 transitions. [2022-11-19 07:06:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-11-19 07:06:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:18,389 INFO L225 Difference]: With dead ends: 1184 [2022-11-19 07:06:18,389 INFO L226 Difference]: Without dead ends: 608 [2022-11-19 07:06:18,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:18,397 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 119 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:18,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5641 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-19 07:06:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 599. [2022-11-19 07:06:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 489 states have internal predecessors, (785), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (103), 96 states have call predecessors, (103), 98 states have call successors, (103) [2022-11-19 07:06:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 989 transitions. [2022-11-19 07:06:18,450 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 989 transitions. Word has length 116 [2022-11-19 07:06:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:18,451 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 989 transitions. [2022-11-19 07:06:18,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:18,451 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 989 transitions. [2022-11-19 07:06:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 07:06:18,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:18,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:18,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:18,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:18,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1453039279, now seen corresponding path program 1 times [2022-11-19 07:06:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:18,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149903226] [2022-11-19 07:06:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:18,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:18,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:18,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:18,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:06:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:19,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:19,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:19,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:19,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149903226] [2022-11-19 07:06:19,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149903226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:19,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:19,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032518748] [2022-11-19 07:06:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:19,179 INFO L87 Difference]: Start difference. First operand 599 states and 989 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:19,594 INFO L93 Difference]: Finished difference Result 1204 states and 1992 transitions. [2022-11-19 07:06:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:19,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-11-19 07:06:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:19,600 INFO L225 Difference]: With dead ends: 1204 [2022-11-19 07:06:19,600 INFO L226 Difference]: Without dead ends: 617 [2022-11-19 07:06:19,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:19,605 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 105 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:19,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 5689 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:06:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-19 07:06:19,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 599. [2022-11-19 07:06:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 489 states have internal predecessors, (785), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (103), 96 states have call predecessors, (103), 98 states have call successors, (103) [2022-11-19 07:06:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 989 transitions. [2022-11-19 07:06:19,637 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 989 transitions. Word has length 117 [2022-11-19 07:06:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:19,637 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 989 transitions. [2022-11-19 07:06:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 989 transitions. [2022-11-19 07:06:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 07:06:19,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:19,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:19,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-19 07:06:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:19,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 819662083, now seen corresponding path program 1 times [2022-11-19 07:06:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298641337] [2022-11-19 07:06:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:19,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:19,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:19,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:06:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:20,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:06:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:06:20,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:20,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:20,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298641337] [2022-11-19 07:06:20,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298641337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:20,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:20,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:20,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624979528] [2022-11-19 07:06:20,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:20,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:20,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:20,331 INFO L87 Difference]: Start difference. First operand 599 states and 989 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:20,476 INFO L93 Difference]: Finished difference Result 1189 states and 1967 transitions. [2022-11-19 07:06:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:06:20,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-19 07:06:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:20,482 INFO L225 Difference]: With dead ends: 1189 [2022-11-19 07:06:20,482 INFO L226 Difference]: Without dead ends: 600 [2022-11-19 07:06:20,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:20,490 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 22 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:20,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2838 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:06:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-19 07:06:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2022-11-19 07:06:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 473 states have (on average 1.6659619450317125) internal successors, (788), 490 states have internal predecessors, (788), 100 states have call successors, (100), 27 states have call predecessors, (100), 26 states have return successors, (99), 95 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-19 07:06:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 987 transitions. [2022-11-19 07:06:20,526 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 987 transitions. Word has length 117 [2022-11-19 07:06:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:20,527 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 987 transitions. [2022-11-19 07:06:20,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 987 transitions. [2022-11-19 07:06:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-19 07:06:20,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:20,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:20,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:20,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:20,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1805408949, now seen corresponding path program 1 times [2022-11-19 07:06:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:20,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070706817] [2022-11-19 07:06:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:20,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:20,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:20,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:06:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:21,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:21,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:21,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:21,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070706817] [2022-11-19 07:06:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070706817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:21,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122852879] [2022-11-19 07:06:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:21,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:21,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:21,326 INFO L87 Difference]: Start difference. First operand 600 states and 987 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:21,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:21,639 INFO L93 Difference]: Finished difference Result 1194 states and 1972 transitions. [2022-11-19 07:06:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-11-19 07:06:21,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:21,648 INFO L225 Difference]: With dead ends: 1194 [2022-11-19 07:06:21,652 INFO L226 Difference]: Without dead ends: 609 [2022-11-19 07:06:21,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:21,660 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 104 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:21,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 5633 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-19 07:06:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 600. [2022-11-19 07:06:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 473 states have (on average 1.6659619450317125) internal successors, (788), 490 states have internal predecessors, (788), 100 states have call successors, (100), 27 states have call predecessors, (100), 26 states have return successors, (99), 95 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-19 07:06:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 987 transitions. [2022-11-19 07:06:21,700 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 987 transitions. Word has length 119 [2022-11-19 07:06:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:21,702 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 987 transitions. [2022-11-19 07:06:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 987 transitions. [2022-11-19 07:06:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:06:21,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:21,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:21,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:21,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:21,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1570987814, now seen corresponding path program 1 times [2022-11-19 07:06:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:21,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743886855] [2022-11-19 07:06:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:21,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:21,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:21,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:21,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:06:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:22,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:06:22,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:22,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:22,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743886855] [2022-11-19 07:06:22,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743886855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:22,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:22,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:22,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624285634] [2022-11-19 07:06:22,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:22,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:22,414 INFO L87 Difference]: Start difference. First operand 600 states and 987 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:22,653 INFO L93 Difference]: Finished difference Result 1214 states and 2010 transitions. [2022-11-19 07:06:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:06:22,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-11-19 07:06:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:22,659 INFO L225 Difference]: With dead ends: 1214 [2022-11-19 07:06:22,659 INFO L226 Difference]: Without dead ends: 629 [2022-11-19 07:06:22,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:22,664 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 112 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:22,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2682 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-19 07:06:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 620. [2022-11-19 07:06:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 492 states have (on average 1.660569105691057) internal successors, (817), 509 states have internal predecessors, (817), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1015 transitions. [2022-11-19 07:06:22,696 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1015 transitions. Word has length 120 [2022-11-19 07:06:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:22,697 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 1015 transitions. [2022-11-19 07:06:22,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1015 transitions. [2022-11-19 07:06:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 07:06:22,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:22,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:22,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:22,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:22,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash 916608113, now seen corresponding path program 1 times [2022-11-19 07:06:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:22,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727966350] [2022-11-19 07:06:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:22,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:22,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:22,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:06:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:23,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:23,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:23,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:23,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727966350] [2022-11-19 07:06:23,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727966350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:23,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:23,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:23,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722609864] [2022-11-19 07:06:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:23,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:23,386 INFO L87 Difference]: Start difference. First operand 620 states and 1015 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:23,608 INFO L93 Difference]: Finished difference Result 1243 states and 2041 transitions. [2022-11-19 07:06:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:23,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-11-19 07:06:23,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:23,614 INFO L225 Difference]: With dead ends: 1243 [2022-11-19 07:06:23,615 INFO L226 Difference]: Without dead ends: 638 [2022-11-19 07:06:23,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:23,619 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 154 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 5549 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:23,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 5549 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-19 07:06:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 620. [2022-11-19 07:06:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 492 states have (on average 1.660569105691057) internal successors, (817), 509 states have internal predecessors, (817), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1015 transitions. [2022-11-19 07:06:23,645 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1015 transitions. Word has length 121 [2022-11-19 07:06:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:23,646 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 1015 transitions. [2022-11-19 07:06:23,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1015 transitions. [2022-11-19 07:06:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 07:06:23,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:23,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:23,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:23,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1014266940, now seen corresponding path program 1 times [2022-11-19 07:06:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749940289] [2022-11-19 07:06:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:23,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:23,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:06:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:24,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:06:24,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:24,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:24,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:24,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749940289] [2022-11-19 07:06:24,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749940289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:24,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:24,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:06:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582440269] [2022-11-19 07:06:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:24,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:06:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:06:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:24,324 INFO L87 Difference]: Start difference. First operand 620 states and 1015 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:24,638 INFO L93 Difference]: Finished difference Result 1238 states and 2032 transitions. [2022-11-19 07:06:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:06:24,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2022-11-19 07:06:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:24,645 INFO L225 Difference]: With dead ends: 1238 [2022-11-19 07:06:24,645 INFO L226 Difference]: Without dead ends: 633 [2022-11-19 07:06:24,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:06:24,651 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 112 mSDsluCounter, 5529 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 6469 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:24,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 6469 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-19 07:06:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 624. [2022-11-19 07:06:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 496 states have (on average 1.655241935483871) internal successors, (821), 513 states have internal predecessors, (821), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1019 transitions. [2022-11-19 07:06:24,678 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1019 transitions. Word has length 122 [2022-11-19 07:06:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:24,678 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1019 transitions. [2022-11-19 07:06:24,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1019 transitions. [2022-11-19 07:06:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-19 07:06:24,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:24,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:24,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:24,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:24,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1179636911, now seen corresponding path program 1 times [2022-11-19 07:06:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:24,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068660021] [2022-11-19 07:06:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:24,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:24,902 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:06:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:25,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:06:25,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:25,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:25,344 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068660021] [2022-11-19 07:06:25,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068660021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:25,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:25,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:06:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162068157] [2022-11-19 07:06:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:25,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:06:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:06:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:25,347 INFO L87 Difference]: Start difference. First operand 624 states and 1019 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:25,758 INFO L93 Difference]: Finished difference Result 1248 states and 2044 transitions. [2022-11-19 07:06:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:06:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2022-11-19 07:06:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:25,764 INFO L225 Difference]: With dead ends: 1248 [2022-11-19 07:06:25,764 INFO L226 Difference]: Without dead ends: 639 [2022-11-19 07:06:25,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:06:25,769 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 108 mSDsluCounter, 5535 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:25,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6477 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:06:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-11-19 07:06:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 630. [2022-11-19 07:06:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 502 states have (on average 1.6474103585657371) internal successors, (827), 519 states have internal predecessors, (827), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1025 transitions. [2022-11-19 07:06:25,795 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1025 transitions. Word has length 123 [2022-11-19 07:06:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:25,795 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1025 transitions. [2022-11-19 07:06:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:25,796 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1025 transitions. [2022-11-19 07:06:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 07:06:25,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:25,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:25,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:26,018 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash 566463529, now seen corresponding path program 1 times [2022-11-19 07:06:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:26,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009308755] [2022-11-19 07:06:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:26,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:26,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:26,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:26,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:06:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:26,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:06:26,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:06:26,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:26,519 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009308755] [2022-11-19 07:06:26,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009308755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:26,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:26,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:06:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716267260] [2022-11-19 07:06:26,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:26,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:06:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:06:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:26,521 INFO L87 Difference]: Start difference. First operand 630 states and 1025 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:26,916 INFO L93 Difference]: Finished difference Result 1262 states and 2060 transitions. [2022-11-19 07:06:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:06:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2022-11-19 07:06:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:26,922 INFO L225 Difference]: With dead ends: 1262 [2022-11-19 07:06:26,922 INFO L226 Difference]: Without dead ends: 647 [2022-11-19 07:06:26,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:06:26,927 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 108 mSDsluCounter, 5535 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:26,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6477 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:06:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-19 07:06:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 638. [2022-11-19 07:06:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 510 states have (on average 1.6372549019607843) internal successors, (835), 527 states have internal predecessors, (835), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1033 transitions. [2022-11-19 07:06:26,961 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1033 transitions. Word has length 124 [2022-11-19 07:06:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:26,962 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1033 transitions. [2022-11-19 07:06:26,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1033 transitions. [2022-11-19 07:06:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-19 07:06:26,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:26,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:26,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:27,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:27,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1438604566, now seen corresponding path program 1 times [2022-11-19 07:06:27,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:27,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021668800] [2022-11-19 07:06:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:27,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:27,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:27,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:27,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 07:06:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:27,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:27,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:06:27,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:27,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:27,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021668800] [2022-11-19 07:06:27,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021668800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:27,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:27,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:27,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034250814] [2022-11-19 07:06:27,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:27,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:27,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:27,659 INFO L87 Difference]: Start difference. First operand 638 states and 1033 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:27,896 INFO L93 Difference]: Finished difference Result 1195 states and 1935 transitions. [2022-11-19 07:06:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-11-19 07:06:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:27,902 INFO L225 Difference]: With dead ends: 1195 [2022-11-19 07:06:27,902 INFO L226 Difference]: Without dead ends: 650 [2022-11-19 07:06:27,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:27,906 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 98 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 5606 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:27,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 5606 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-19 07:06:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 645. [2022-11-19 07:06:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 514 states have (on average 1.632295719844358) internal successors, (839), 533 states have internal predecessors, (839), 101 states have call successors, (101), 28 states have call predecessors, (101), 29 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2022-11-19 07:06:27,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1042 transitions. [2022-11-19 07:06:27,937 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1042 transitions. Word has length 125 [2022-11-19 07:06:27,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:27,938 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1042 transitions. [2022-11-19 07:06:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:27,938 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1042 transitions. [2022-11-19 07:06:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 07:06:27,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:27,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:27,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:28,155 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1734455383, now seen corresponding path program 1 times [2022-11-19 07:06:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63041858] [2022-11-19 07:06:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:28,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:28,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:28,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:28,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-19 07:06:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:28,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:06:28,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:06:28,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:28,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:28,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63041858] [2022-11-19 07:06:28,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63041858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:28,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:28,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950189388] [2022-11-19 07:06:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:28,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:28,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:28,627 INFO L87 Difference]: Start difference. First operand 645 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:28,715 INFO L93 Difference]: Finished difference Result 1259 states and 2040 transitions. [2022-11-19 07:06:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:06:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-11-19 07:06:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:28,720 INFO L225 Difference]: With dead ends: 1259 [2022-11-19 07:06:28,720 INFO L226 Difference]: Without dead ends: 627 [2022-11-19 07:06:28,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:28,724 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 24 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:28,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2837 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:06:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-19 07:06:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-11-19 07:06:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 499 states have (on average 1.6272545090180361) internal successors, (812), 516 states have internal predecessors, (812), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1010 transitions. [2022-11-19 07:06:28,749 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1010 transitions. Word has length 126 [2022-11-19 07:06:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:28,750 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1010 transitions. [2022-11-19 07:06:28,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1010 transitions. [2022-11-19 07:06:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-19 07:06:28,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:28,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:28,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:28,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:28,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1493422036, now seen corresponding path program 1 times [2022-11-19 07:06:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:28,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347438643] [2022-11-19 07:06:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:28,973 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:28,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 07:06:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:29,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:29,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:06:29,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:29,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347438643] [2022-11-19 07:06:29,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347438643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:29,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728016202] [2022-11-19 07:06:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:29,428 INFO L87 Difference]: Start difference. First operand 627 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:29,676 INFO L93 Difference]: Finished difference Result 1178 states and 1903 transitions. [2022-11-19 07:06:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2022-11-19 07:06:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:29,681 INFO L225 Difference]: With dead ends: 1178 [2022-11-19 07:06:29,681 INFO L226 Difference]: Without dead ends: 621 [2022-11-19 07:06:29,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:29,684 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 87 mSDsluCounter, 4568 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:29,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 5500 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:06:29,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-19 07:06:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 618. [2022-11-19 07:06:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 490 states have (on average 1.6244897959183673) internal successors, (796), 507 states have internal predecessors, (796), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (98), 95 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-19 07:06:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 994 transitions. [2022-11-19 07:06:29,709 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 994 transitions. Word has length 127 [2022-11-19 07:06:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:29,710 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 994 transitions. [2022-11-19 07:06:29,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 994 transitions. [2022-11-19 07:06:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-19 07:06:29,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:29,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:29,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:29,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:29,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1685221104, now seen corresponding path program 1 times [2022-11-19 07:06:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934466790] [2022-11-19 07:06:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:29,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:29,935 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:29,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:06:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:30,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:30,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:06:30,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:30,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:30,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934466790] [2022-11-19 07:06:30,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934466790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:30,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:30,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:06:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995270712] [2022-11-19 07:06:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:30,339 INFO L87 Difference]: Start difference. First operand 618 states and 994 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:30,542 INFO L93 Difference]: Finished difference Result 1169 states and 1887 transitions. [2022-11-19 07:06:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2022-11-19 07:06:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:30,548 INFO L225 Difference]: With dead ends: 1169 [2022-11-19 07:06:30,548 INFO L226 Difference]: Without dead ends: 608 [2022-11-19 07:06:30,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:30,551 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 99 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:30,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 5436 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:06:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-19 07:06:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2022-11-19 07:06:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 477 states have (on average 1.6079664570230607) internal successors, (767), 494 states have internal predecessors, (767), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-19 07:06:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 964 transitions. [2022-11-19 07:06:30,575 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 964 transitions. Word has length 127 [2022-11-19 07:06:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:30,575 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 964 transitions. [2022-11-19 07:06:30,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:06:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 964 transitions. [2022-11-19 07:06:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-19 07:06:30,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:30,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:30,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:30,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:30,795 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:30,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1682333171, now seen corresponding path program 1 times [2022-11-19 07:06:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:30,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044208113] [2022-11-19 07:06:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:30,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:30,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:30,798 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:30,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 07:06:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:31,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:06:31,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:06:31,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:31,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:31,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044208113] [2022-11-19 07:06:31,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044208113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:31,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:31,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097563293] [2022-11-19 07:06:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:31,277 INFO L87 Difference]: Start difference. First operand 605 states and 964 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:31,444 INFO L93 Difference]: Finished difference Result 1220 states and 1944 transitions. [2022-11-19 07:06:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:06:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-19 07:06:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:31,450 INFO L225 Difference]: With dead ends: 1220 [2022-11-19 07:06:31,450 INFO L226 Difference]: Without dead ends: 605 [2022-11-19 07:06:31,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:31,454 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 76 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:31,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2650 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:06:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-19 07:06:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2022-11-19 07:06:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 477 states have (on average 1.5911949685534592) internal successors, (759), 493 states have internal predecessors, (759), 100 states have call successors, (100), 29 states have call predecessors, (100), 27 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-19 07:06:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 956 transitions. [2022-11-19 07:06:31,479 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 956 transitions. Word has length 129 [2022-11-19 07:06:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:31,480 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 956 transitions. [2022-11-19 07:06:31,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 956 transitions. [2022-11-19 07:06:31,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 07:06:31,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:31,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:31,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:31,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:31,700 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash -559226990, now seen corresponding path program 1 times [2022-11-19 07:06:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:31,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387071743] [2022-11-19 07:06:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:31,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:31,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:31,702 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:31,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:06:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:32,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:06:32,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:32,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:32,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:32,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387071743] [2022-11-19 07:06:32,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387071743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:32,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:32,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113618121] [2022-11-19 07:06:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:32,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:32,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:32,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:32,539 INFO L87 Difference]: Start difference. First operand 605 states and 956 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:33,626 INFO L93 Difference]: Finished difference Result 1680 states and 2724 transitions. [2022-11-19 07:06:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:06:33,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-11-19 07:06:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:33,635 INFO L225 Difference]: With dead ends: 1680 [2022-11-19 07:06:33,635 INFO L226 Difference]: Without dead ends: 1139 [2022-11-19 07:06:33,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:33,640 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 888 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:33,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 2619 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:06:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-19 07:06:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1074. [2022-11-19 07:06:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 857 states have (on average 1.619603267211202) internal successors, (1388), 881 states have internal predecessors, (1388), 171 states have call successors, (171), 48 states have call predecessors, (171), 45 states have return successors, (172), 158 states have call predecessors, (172), 167 states have call successors, (172) [2022-11-19 07:06:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1731 transitions. [2022-11-19 07:06:33,703 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1731 transitions. Word has length 130 [2022-11-19 07:06:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:33,703 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1731 transitions. [2022-11-19 07:06:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1731 transitions. [2022-11-19 07:06:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 07:06:33,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:33,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:33,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:33,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:33,924 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 133105036, now seen corresponding path program 1 times [2022-11-19 07:06:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:33,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515971068] [2022-11-19 07:06:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:33,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:33,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:33,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 07:06:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:34,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:06:34,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:06:34,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:06:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 07:06:35,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:35,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515971068] [2022-11-19 07:06:35,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515971068] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:35,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:06:35,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2022-11-19 07:06:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830402070] [2022-11-19 07:06:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:06:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:06:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:06:35,022 INFO L87 Difference]: Start difference. First operand 1074 states and 1731 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 07:06:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:39,170 INFO L93 Difference]: Finished difference Result 3502 states and 5891 transitions. [2022-11-19 07:06:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:06:39,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2022-11-19 07:06:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:39,190 INFO L225 Difference]: With dead ends: 3502 [2022-11-19 07:06:39,190 INFO L226 Difference]: Without dead ends: 2492 [2022-11-19 07:06:39,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:06:39,202 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 2521 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:39,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2628 Valid, 4551 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-19 07:06:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2022-11-19 07:06:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2012. [2022-11-19 07:06:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1602 states have (on average 1.6448189762796503) internal successors, (2635), 1650 states have internal predecessors, (2635), 324 states have call successors, (324), 84 states have call predecessors, (324), 85 states have return successors, (383), 305 states have call predecessors, (383), 318 states have call successors, (383) [2022-11-19 07:06:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 3342 transitions. [2022-11-19 07:06:39,399 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 3342 transitions. Word has length 131 [2022-11-19 07:06:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:39,399 INFO L495 AbstractCegarLoop]: Abstraction has 2012 states and 3342 transitions. [2022-11-19 07:06:39,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 07:06:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 3342 transitions. [2022-11-19 07:06:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 07:06:39,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:39,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:39,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:39,628 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1132247174, now seen corresponding path program 1 times [2022-11-19 07:06:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:39,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128280317] [2022-11-19 07:06:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:39,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:39,630 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:39,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 07:06:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:40,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:06:40,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:40,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:40,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:40,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128280317] [2022-11-19 07:06:40,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128280317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:40,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:40,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130997153] [2022-11-19 07:06:40,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:06:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:06:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:40,201 INFO L87 Difference]: Start difference. First operand 2012 states and 3342 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:41,519 INFO L93 Difference]: Finished difference Result 5727 states and 9666 transitions. [2022-11-19 07:06:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:06:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-11-19 07:06:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:41,545 INFO L225 Difference]: With dead ends: 5727 [2022-11-19 07:06:41,546 INFO L226 Difference]: Without dead ends: 3779 [2022-11-19 07:06:41,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:06:41,564 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 766 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:41,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 3117 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:06:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2022-11-19 07:06:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3759. [2022-11-19 07:06:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2980 states have (on average 1.6251677852348994) internal successors, (4843), 3074 states have internal predecessors, (4843), 615 states have call successors, (615), 166 states have call predecessors, (615), 163 states have return successors, (735), 570 states have call predecessors, (735), 605 states have call successors, (735) [2022-11-19 07:06:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6193 transitions. [2022-11-19 07:06:41,912 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6193 transitions. Word has length 132 [2022-11-19 07:06:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:41,912 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 6193 transitions. [2022-11-19 07:06:41,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:06:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6193 transitions. [2022-11-19 07:06:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-19 07:06:41,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:41,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:41,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:42,139 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 532665384, now seen corresponding path program 1 times [2022-11-19 07:06:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276267491] [2022-11-19 07:06:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:42,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:42,141 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:42,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-19 07:06:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:42,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:06:42,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:42,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:42,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:42,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276267491] [2022-11-19 07:06:42,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276267491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:42,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:42,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:06:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119875412] [2022-11-19 07:06:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:42,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:06:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:06:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:06:42,744 INFO L87 Difference]: Start difference. First operand 3759 states and 6193 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:44,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:44,532 INFO L93 Difference]: Finished difference Result 10847 states and 18551 transitions. [2022-11-19 07:06:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:06:44,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-11-19 07:06:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:44,584 INFO L225 Difference]: With dead ends: 10847 [2022-11-19 07:06:44,584 INFO L226 Difference]: Without dead ends: 7152 [2022-11-19 07:06:44,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:44,603 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 1208 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:44,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 5117 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 07:06:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2022-11-19 07:06:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 5692. [2022-11-19 07:06:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5692 states, 4489 states have (on average 1.6126085987970595) internal successors, (7239), 4641 states have internal predecessors, (7239), 944 states have call successors, (944), 254 states have call predecessors, (944), 258 states have return successors, (1235), 898 states have call predecessors, (1235), 930 states have call successors, (1235) [2022-11-19 07:06:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5692 states to 5692 states and 9418 transitions. [2022-11-19 07:06:45,163 INFO L78 Accepts]: Start accepts. Automaton has 5692 states and 9418 transitions. Word has length 138 [2022-11-19 07:06:45,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:45,164 INFO L495 AbstractCegarLoop]: Abstraction has 5692 states and 9418 transitions. [2022-11-19 07:06:45,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5692 states and 9418 transitions. [2022-11-19 07:06:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-19 07:06:45,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:45,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:45,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:45,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:45,387 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash 981219907, now seen corresponding path program 1 times [2022-11-19 07:06:45,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:45,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237922146] [2022-11-19 07:06:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:45,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:45,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:45,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-19 07:06:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:45,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:06:45,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:45,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:45,952 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:45,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237922146] [2022-11-19 07:06:45,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237922146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:45,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:45,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:06:45,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592959216] [2022-11-19 07:06:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:45,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:45,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:45,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:45,954 INFO L87 Difference]: Start difference. First operand 5692 states and 9418 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:46,608 INFO L93 Difference]: Finished difference Result 15162 states and 25887 transitions. [2022-11-19 07:06:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2022-11-19 07:06:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:46,680 INFO L225 Difference]: With dead ends: 15162 [2022-11-19 07:06:46,680 INFO L226 Difference]: Without dead ends: 9534 [2022-11-19 07:06:46,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:46,710 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 841 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:46,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1902 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:06:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9534 states. [2022-11-19 07:06:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9534 to 9530. [2022-11-19 07:06:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9530 states, 7487 states have (on average 1.6061172699345532) internal successors, (12025), 7755 states have internal predecessors, (12025), 1606 states have call successors, (1606), 430 states have call predecessors, (1606), 436 states have return successors, (2426), 1546 states have call predecessors, (2426), 1584 states have call successors, (2426) [2022-11-19 07:06:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9530 states to 9530 states and 16057 transitions. [2022-11-19 07:06:47,680 INFO L78 Accepts]: Start accepts. Automaton has 9530 states and 16057 transitions. Word has length 139 [2022-11-19 07:06:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:47,680 INFO L495 AbstractCegarLoop]: Abstraction has 9530 states and 16057 transitions. [2022-11-19 07:06:47,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9530 states and 16057 transitions. [2022-11-19 07:06:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-19 07:06:47,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:47,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:47,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:47,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:47,899 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 365078501, now seen corresponding path program 1 times [2022-11-19 07:06:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431652929] [2022-11-19 07:06:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:47,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:47,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:47,902 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:47,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-19 07:06:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:48,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:06:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:48,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:48,595 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:48,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431652929] [2022-11-19 07:06:48,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431652929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:48,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:48,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:06:48,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737769773] [2022-11-19 07:06:48,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:48,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:48,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:48,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:48,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:48,597 INFO L87 Difference]: Start difference. First operand 9530 states and 16057 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:50,074 INFO L93 Difference]: Finished difference Result 26696 states and 47307 transitions. [2022-11-19 07:06:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:50,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-11-19 07:06:50,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:50,174 INFO L225 Difference]: With dead ends: 26696 [2022-11-19 07:06:50,174 INFO L226 Difference]: Without dead ends: 17230 [2022-11-19 07:06:50,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:50,239 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 840 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:50,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1913 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:06:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17230 states. [2022-11-19 07:06:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17230 to 17226. [2022-11-19 07:06:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13499 states have (on average 1.6015260389658492) internal successors, (21619), 13999 states have internal predecessors, (21619), 2934 states have call successors, (2934), 782 states have call predecessors, (2934), 792 states have return successors, (5469), 2846 states have call predecessors, (5469), 2896 states have call successors, (5469) [2022-11-19 07:06:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 30022 transitions. [2022-11-19 07:06:51,765 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 30022 transitions. Word has length 140 [2022-11-19 07:06:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:51,766 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 30022 transitions. [2022-11-19 07:06:51,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 30022 transitions. [2022-11-19 07:06:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-19 07:06:51,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:51,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:51,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:51,988 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1536830750, now seen corresponding path program 1 times [2022-11-19 07:06:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:51,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235035314] [2022-11-19 07:06:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:51,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:06:51,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:51,992 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:06:52,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-19 07:06:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:52,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:06:52,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:52,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:52,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:52,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235035314] [2022-11-19 07:06:52,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235035314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:52,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:52,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:06:52,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620774269] [2022-11-19 07:06:52,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:52,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:52,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:52,657 INFO L87 Difference]: Start difference. First operand 17226 states and 30022 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:55,357 INFO L93 Difference]: Finished difference Result 49804 states and 94201 transitions. [2022-11-19 07:06:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2022-11-19 07:06:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:55,624 INFO L225 Difference]: With dead ends: 49804 [2022-11-19 07:06:55,625 INFO L226 Difference]: Without dead ends: 32642 [2022-11-19 07:06:56,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:56,182 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 839 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:56,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1962 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:06:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32642 states. [2022-11-19 07:06:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32642 to 32638. [2022-11-19 07:06:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32638 states, 25539 states have (on average 1.597595833822781) internal successors, (40801), 26503 states have internal predecessors, (40801), 5594 states have call successors, (5594), 1486 states have call predecessors, (5594), 1504 states have return successors, (13832), 5450 states have call predecessors, (13832), 5524 states have call successors, (13832) [2022-11-19 07:06:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32638 states to 32638 states and 60227 transitions. [2022-11-19 07:06:59,838 INFO L78 Accepts]: Start accepts. Automaton has 32638 states and 60227 transitions. Word has length 141 [2022-11-19 07:06:59,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:59,839 INFO L495 AbstractCegarLoop]: Abstraction has 32638 states and 60227 transitions. [2022-11-19 07:06:59,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:06:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 32638 states and 60227 transitions. [2022-11-19 07:06:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-19 07:06:59,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:59,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:59,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:07:00,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:07:00,059 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:00,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1996255840, now seen corresponding path program 1 times [2022-11-19 07:07:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:07:00,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677426298] [2022-11-19 07:07:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:00,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:07:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:07:00,063 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:07:00,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-19 07:07:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:00,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:07:00,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:07:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:07:00,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:07:00,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:07:00,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677426298] [2022-11-19 07:07:00,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677426298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:00,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:00,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279962622] [2022-11-19 07:07:00,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:00,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:07:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:00,726 INFO L87 Difference]: Start difference. First operand 32638 states and 60227 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:07:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:07,104 INFO L93 Difference]: Finished difference Result 96060 states and 202351 transitions. [2022-11-19 07:07:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2022-11-19 07:07:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:07,716 INFO L225 Difference]: With dead ends: 96060 [2022-11-19 07:07:07,716 INFO L226 Difference]: Without dead ends: 63486 [2022-11-19 07:07:08,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:08,497 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 837 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:08,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1998 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:07:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63486 states. [2022-11-19 07:07:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63486 to 63482. [2022-11-19 07:07:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63482 states, 49635 states have (on average 1.5936939659514455) internal successors, (79103), 51527 states have internal predecessors, (79103), 10918 states have call successors, (10918), 2894 states have call predecessors, (10918), 2928 states have return successors, (38707), 10662 states have call predecessors, (38707), 10784 states have call successors, (38707) [2022-11-19 07:07:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63482 states to 63482 states and 128728 transitions. [2022-11-19 07:07:16,515 INFO L78 Accepts]: Start accepts. Automaton has 63482 states and 128728 transitions. Word has length 142 [2022-11-19 07:07:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:16,516 INFO L495 AbstractCegarLoop]: Abstraction has 63482 states and 128728 transitions. [2022-11-19 07:07:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:07:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 63482 states and 128728 transitions. [2022-11-19 07:07:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-19 07:07:16,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:16,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:16,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-19 07:07:16,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:07:16,734 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1817631198, now seen corresponding path program 1 times [2022-11-19 07:07:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:07:16,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038069889] [2022-11-19 07:07:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:16,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:07:16,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:07:16,737 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:07:16,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd76f6e-7dd1-4bb8-a07a-d851109af4c7/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-19 07:07:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:17,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:07:17,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:07:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:07:17,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:07:17,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:07:17,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038069889] [2022-11-19 07:07:17,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038069889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:17,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:17,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:07:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793066278] [2022-11-19 07:07:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:17,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:07:17,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:07:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:07:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:17,431 INFO L87 Difference]: Start difference. First operand 63482 states and 128728 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)