./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:12:22,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:12:22,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:12:22,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:12:22,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:12:22,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:12:22,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:12:22,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:12:22,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:12:22,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:12:22,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:12:22,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:12:22,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:12:22,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:12:22,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:12:22,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:12:22,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:12:22,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:12:22,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:12:22,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:12:22,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:12:22,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:12:22,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:12:22,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:12:22,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:12:22,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:12:22,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:12:22,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:12:22,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:12:22,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:12:22,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:12:22,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:12:22,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:12:22,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:12:22,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:12:22,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:12:22,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:12:22,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:12:22,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:12:22,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:12:22,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:12:22,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:12:22,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:12:22,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:12:22,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:12:22,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:12:22,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:12:22,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:12:22,389 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:12:22,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:12:22,390 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:12:22,390 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:12:22,391 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:12:22,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:12:22,392 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:12:22,392 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:12:22,392 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:12:22,393 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:12:22,393 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:12:22,393 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:12:22,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:12:22,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:12:22,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:12:22,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:12:22,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:12:22,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:12:22,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:12:22,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:12:22,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:12:22,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:12:22,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:12:22,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:12:22,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:12:22,398 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:12:22,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:12:22,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:12:22,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:12:22,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:12:22,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:12:22,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:12:22,400 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_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 [2022-11-23 16:12:22,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:12:22,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:12:22,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:12:22,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:12:22,771 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:12:22,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-23 16:12:25,688 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:12:26,011 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:12:26,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-23 16:12:26,039 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data/774b8d7c8/9246654a168f4bc6ba889fb33bbd098f/FLAG36167e85b [2022-11-23 16:12:26,056 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data/774b8d7c8/9246654a168f4bc6ba889fb33bbd098f [2022-11-23 16:12:26,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:12:26,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:12:26,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:12:26,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:12:26,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:12:26,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc0cbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26, skipping insertion in model container [2022-11-23 16:12:26,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:12:26,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:12:26,298 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-23 16:12:26,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:12:26,502 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:12:26,514 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-23 16:12:26,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:12:26,706 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:12:26,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26 WrapperNode [2022-11-23 16:12:26,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:12:26,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:12:26,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:12:26,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:12:26,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,826 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 683 [2022-11-23 16:12:26,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:12:26,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:12:26,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:12:26,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:12:26,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:12:26,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:12:26,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:12:26,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:12:26,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (1/1) ... [2022-11-23 16:12:26,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:12:26,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:26,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:12:27,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:12:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:12:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:12:27,272 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:12:27,275 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:12:37,246 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:12:37,278 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:12:37,279 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:12:37,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:37 BoogieIcfgContainer [2022-11-23 16:12:37,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:12:37,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:12:37,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:12:37,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:12:37,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:26" (1/3) ... [2022-11-23 16:12:37,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@852257b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:37, skipping insertion in model container [2022-11-23 16:12:37,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:26" (2/3) ... [2022-11-23 16:12:37,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@852257b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:37, skipping insertion in model container [2022-11-23 16:12:37,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:37" (3/3) ... [2022-11-23 16:12:37,295 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2022-11-23 16:12:37,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:12:37,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:12:37,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:12:37,402 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;@2247c81c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:12:37,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:12:37,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 16:12:37,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:37,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 16:12:37,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 16:12:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:12:37,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211031998] [2022-11-23 16:12:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:12:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:12:37,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:12:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:12:37,689 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 16:12:37,691 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:12:37,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:12:37,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:12:37,700 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 16:12:37,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:12:37,725 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:12:37,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:12:37 BoogieIcfgContainer [2022-11-23 16:12:37,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:12:37,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:12:37,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:12:37,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:12:37,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:37" (3/4) ... [2022-11-23 16:12:37,754 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 16:12:37,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:12:37,757 INFO L158 Benchmark]: Toolchain (without parser) took 11695.53ms. Allocated memory was 180.4MB in the beginning and 398.5MB in the end (delta: 218.1MB). Free memory was 151.2MB in the beginning and 167.7MB in the end (delta: -16.4MB). Peak memory consumption was 203.3MB. Max. memory is 16.1GB. [2022-11-23 16:12:37,758 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:12:37,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.09ms. Allocated memory is still 180.4MB. Free memory was 151.2MB in the beginning and 124.5MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 16:12:37,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.91ms. Allocated memory is still 180.4MB. Free memory was 124.5MB in the beginning and 116.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 16:12:37,762 INFO L158 Benchmark]: Boogie Preprocessor took 119.02ms. Allocated memory is still 180.4MB. Free memory was 116.6MB in the beginning and 112.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 16:12:37,769 INFO L158 Benchmark]: RCFGBuilder took 10334.67ms. Allocated memory was 180.4MB in the beginning and 398.5MB in the end (delta: 218.1MB). Free memory was 112.8MB in the beginning and 191.8MB in the end (delta: -79.0MB). Peak memory consumption was 217.0MB. Max. memory is 16.1GB. [2022-11-23 16:12:37,772 INFO L158 Benchmark]: TraceAbstraction took 459.44ms. Allocated memory is still 398.5MB. Free memory was 191.8MB in the beginning and 167.7MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 16:12:37,772 INFO L158 Benchmark]: Witness Printer took 8.34ms. Allocated memory is still 398.5MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:12:37,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.09ms. Allocated memory is still 180.4MB. Free memory was 151.2MB in the beginning and 124.5MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 118.91ms. Allocated memory is still 180.4MB. Free memory was 124.5MB in the beginning and 116.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.02ms. Allocated memory is still 180.4MB. Free memory was 116.6MB in the beginning and 112.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 10334.67ms. Allocated memory was 180.4MB in the beginning and 398.5MB in the end (delta: 218.1MB). Free memory was 112.8MB in the beginning and 191.8MB in the end (delta: -79.0MB). Peak memory consumption was 217.0MB. Max. memory is 16.1GB. * TraceAbstraction took 459.44ms. Allocated memory is still 398.5MB. Free memory was 191.8MB in the beginning and 167.7MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 8.34ms. Allocated memory is still 398.5MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 84, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 32); [L29] const SORT_32 msb_SORT_32 = (SORT_32)1 << (32 - 1); [L31] const SORT_1 var_4 = 0; [L32] const SORT_1 var_10 = 1; [L33] const SORT_32 var_33 = 0; [L34] const SORT_32 var_39 = 2; [L35] const SORT_32 var_51 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L40] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] SORT_32 state_34 = __VERIFIER_nondet_uint() & mask_SORT_32; [L51] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 init_6_arg_1 = var_4; [L54] state_5 = init_6_arg_1 [L55] SORT_1 init_15_arg_1 = var_10; [L56] state_14 = init_15_arg_1 [L57] SORT_1 init_17_arg_1 = var_4; [L58] state_16 = init_17_arg_1 [L59] SORT_1 init_19_arg_1 = var_4; [L60] state_18 = init_19_arg_1 [L61] SORT_1 init_21_arg_1 = var_4; [L62] state_20 = init_21_arg_1 [L63] SORT_1 init_23_arg_1 = var_4; [L64] state_22 = init_23_arg_1 [L65] SORT_1 init_25_arg_1 = var_4; [L66] state_24 = init_25_arg_1 [L67] SORT_1 init_27_arg_1 = var_4; [L68] state_26 = init_27_arg_1 [L69] SORT_1 init_29_arg_1 = var_4; [L70] state_28 = init_29_arg_1 [L71] SORT_1 init_31_arg_1 = var_10; [L72] state_30 = init_31_arg_1 [L73] SORT_32 init_35_arg_1 = var_33; [L74] state_34 = init_35_arg_1 [L75] SORT_1 init_37_arg_1 = var_4; [L76] state_36 = init_37_arg_1 VAL [init_15_arg_1=1, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=1, init_35_arg_1=0, init_37_arg_1=0, init_6_arg_1=0, mask_SORT_1=1, mask_SORT_32=4294967295, msb_SORT_1=1, msb_SORT_32=2147483648, state_14=1, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=1, state_34=0, state_36=0, state_5=0, var_10=1, var_33=0, var_39=2, var_4=0, var_51=1] [L79] input_2 = __VERIFIER_nondet_uchar() [L80] input_3 = __VERIFIER_nondet_uchar() [L83] SORT_1 var_7_arg_0 = state_5; [L84] SORT_1 var_7 = ~var_7_arg_0; [L85] SORT_1 var_11_arg_0 = var_7; [L86] SORT_1 var_11 = ~var_11_arg_0; [L87] SORT_1 var_12_arg_0 = var_10; [L88] SORT_1 var_12_arg_1 = var_11; [L89] SORT_1 var_12 = var_12_arg_0 & var_12_arg_1; [L90] var_12 = var_12 & mask_SORT_1 [L91] SORT_1 bad_13_arg_0 = var_12; [L92] CALL __VERIFIER_assert(!(bad_13_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 16:12:37,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:12:40,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:12:40,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:12:40,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:12:40,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:12:40,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:12:40,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:12:40,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:12:40,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:12:40,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:12:40,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:12:40,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:12:40,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:12:40,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:12:40,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:12:40,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:12:40,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:12:40,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:12:40,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:12:40,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:12:40,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:12:40,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:12:40,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:12:40,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:12:40,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:12:40,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:12:40,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:12:40,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:12:40,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:12:40,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:12:40,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:12:40,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:12:40,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:12:40,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:12:40,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:12:40,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:12:40,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:12:40,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:12:40,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:12:40,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:12:40,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:12:40,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 16:12:40,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:12:40,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:12:40,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:12:40,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:12:40,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:12:40,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:12:40,625 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:12:40,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:12:40,625 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:12:40,625 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:12:40,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:12:40,627 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:12:40,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:12:40,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:12:40,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:12:40,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:12:40,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:12:40,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 16:12:40,629 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 16:12:40,629 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 16:12:40,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:12:40,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:12:40,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:12:40,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:12:40,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 16:12:40,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:12:40,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:12:40,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:12:40,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:12:40,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:12:40,632 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 16:12:40,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 16:12:40,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:12:40,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:12:40,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 16:12:40,633 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_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 [2022-11-23 16:12:41,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:12:41,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:12:41,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:12:41,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:12:41,114 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:12:41,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-23 16:12:44,441 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:12:44,717 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:12:44,718 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-23 16:12:44,727 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data/f9ff5ee56/22983aa5db53441bbd16a547f33c960b/FLAG63f6b63ee [2022-11-23 16:12:44,749 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/data/f9ff5ee56/22983aa5db53441bbd16a547f33c960b [2022-11-23 16:12:44,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:12:44,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:12:44,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:12:44,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:12:44,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:12:44,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:44" (1/1) ... [2022-11-23 16:12:44,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f674d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:44, skipping insertion in model container [2022-11-23 16:12:44,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:44" (1/1) ... [2022-11-23 16:12:44,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:12:44,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:12:44,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-23 16:12:45,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:12:45,197 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:12:45,209 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-23 16:12:45,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:12:45,326 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:12:45,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45 WrapperNode [2022-11-23 16:12:45,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:12:45,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:12:45,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:12:45,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:12:45,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,425 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 683 [2022-11-23 16:12:45,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:12:45,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:12:45,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:12:45,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:12:45,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:12:45,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:12:45,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:12:45,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:12:45,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (1/1) ... [2022-11-23 16:12:45,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:12:45,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:45,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:12:45,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:12:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:12:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:12:45,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:12:45,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:12:46,875 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:12:46,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:12:46,893 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:12:46,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:46 BoogieIcfgContainer [2022-11-23 16:12:46,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:12:46,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:12:46,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:12:46,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:12:46,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:44" (1/3) ... [2022-11-23 16:12:46,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c0f70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:46, skipping insertion in model container [2022-11-23 16:12:46,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:45" (2/3) ... [2022-11-23 16:12:46,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c0f70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:46, skipping insertion in model container [2022-11-23 16:12:46,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:46" (3/3) ... [2022-11-23 16:12:46,908 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2022-11-23 16:12:46,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:12:46,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:12:46,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:12:47,001 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;@3685d471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:12:47,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:12:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:12:47,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:47,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:12:47,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 16:12:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:47,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646409547] [2022-11-23 16:12:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:47,040 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 [2022-11-23 16:12:47,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:47,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:47,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:47,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 16:12:47,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:47,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:12:47,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646409547] [2022-11-23 16:12:47,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646409547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:47,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:47,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:12:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921768038] [2022-11-23 16:12:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:12:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:12:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:12:47,451 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:47,578 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 16:12:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:12:47,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 16:12:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:47,591 INFO L225 Difference]: With dead ends: 20 [2022-11-23 16:12:47,591 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 16:12:47,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:12:47,597 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:47,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:12:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 16:12:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 16:12:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 16:12:47,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 16:12:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:47,637 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 16:12:47,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 16:12:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:12:47,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:47,638 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:47,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 16:12:47,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:47,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 16:12:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:47,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989683707] [2022-11-23 16:12:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:47,844 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 [2022-11-23 16:12:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:47,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:47,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:48,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 16:12:48,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:48,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:48,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:48,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989683707] [2022-11-23 16:12:48,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989683707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:48,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1329551955] [2022-11-23 16:12:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:48,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:12:48,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:12:48,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:12:48,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 16:12:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:49,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 16:12:49,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:49,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:50,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1329551955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:50,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015181028] [2022-11-23 16:12:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:50,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:50,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:50,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:12:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:12:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 16:12:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:50,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:50,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015181028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:50,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:12:50,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2022-11-23 16:12:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204075634] [2022-11-23 16:12:50,811 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:12:50,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 16:12:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:12:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 16:12:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:12:50,814 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:51,093 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 16:12:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:12:51,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 16:12:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:51,095 INFO L225 Difference]: With dead ends: 16 [2022-11-23 16:12:51,095 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 16:12:51,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:12:51,097 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:51,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:12:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 16:12:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 16:12:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 16:12:51,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 16:12:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:51,102 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 16:12:51,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 16:12:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 16:12:51,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:51,104 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 16:12:51,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:51,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:51,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:51,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 16:12:51,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:51,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42983587] [2022-11-23 16:12:51,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:12:51,713 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 [2022-11-23 16:12:51,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:51,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:12:51,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:12:52,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:12:52,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:12:52,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-23 16:12:52,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:52,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:53,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:12:53,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42983587] [2022-11-23 16:12:53,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42983587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:53,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221520994] [2022-11-23 16:12:53,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:12:53,578 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:12:53,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:12:53,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:12:53,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 16:12:54,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:12:54,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:12:54,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-23 16:12:54,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:55,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:59,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [221520994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:59,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540700372] [2022-11-23 16:12:59,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:12:59,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:59,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:59,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:12:59,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:13:00,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:13:00,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:13:00,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-23 16:13:00,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:13:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:01,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:13:15,847 WARN L233 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 283 DAG size of output: 278 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:16,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540700372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:13:16,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:13:16,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 8] total 22 [2022-11-23 16:13:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859842565] [2022-11-23 16:13:16,061 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:13:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 16:13:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:13:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 16:13:16,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=346, Unknown=1, NotChecked=0, Total=462 [2022-11-23 16:13:16,067 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:13:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:13:16,733 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-23 16:13:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:13:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 16:13:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:13:16,734 INFO L225 Difference]: With dead ends: 19 [2022-11-23 16:13:16,734 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 16:13:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=163, Invalid=436, Unknown=1, NotChecked=0, Total=600 [2022-11-23 16:13:16,736 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:13:16,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 35 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 16:13:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 16:13:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 16:13:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:13:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 16:13:16,742 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-23 16:13:16,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:13:16,743 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 16:13:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:13:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 16:13:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:13:16,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:13:16,744 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 16:13:16,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-23 16:13:16,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:17,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 16:13:17,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:13:17,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:13:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:13:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-23 16:13:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:13:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222173091] [2022-11-23 16:13:17,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:13:17,356 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 [2022-11-23 16:13:17,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:13:17,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:13:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:13:18,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 16:13:18,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:13:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 345 conjunts are in the unsatisfiable core [2022-11-23 16:13:18,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:13:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:27,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:14:04,520 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification that was a NOOP. DAG size: 928 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:05,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:14:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222173091] [2022-11-23 16:14:05,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222173091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:14:05,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438234053] [2022-11-23 16:14:05,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:14:05,348 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:14:05,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:14:05,349 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:14:05,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 16:14:06,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 16:14:06,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:14:06,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-23 16:14:06,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:09,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:14:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:22,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438234053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:14:22,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386990889] [2022-11-23 16:14:22,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:14:22,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:14:22,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:14:22,522 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:14:22,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 16:14:23,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 16:14:23,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:14:23,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-23 16:14:23,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:14:26,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:15:20,940 WARN L233 SmtUtils]: Spent 31.42s on a formula simplification. DAG size of input: 193 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:15:21,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386990889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:15:21,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:15:21,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 33 [2022-11-23 16:15:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234696769] [2022-11-23 16:15:21,182 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:15:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 16:15:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:15:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 16:15:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=913, Unknown=17, NotChecked=0, Total=1056 [2022-11-23 16:15:21,184 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:15:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:15:29,234 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-23 16:15:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 16:15:29,235 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 16:15:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:15:29,235 INFO L225 Difference]: With dead ends: 28 [2022-11-23 16:15:29,235 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 16:15:29,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 115.0s TimeCoverageRelationStatistics Valid=289, Invalid=1334, Unknown=17, NotChecked=0, Total=1640 [2022-11-23 16:15:29,238 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 82 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:15:29,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 56 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 16:15:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 16:15:29,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-23 16:15:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:15:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-23 16:15:29,248 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2022-11-23 16:15:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:15:29,249 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-23 16:15:29,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:15:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-23 16:15:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 16:15:29,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:15:29,250 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-23 16:15:29,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:15:29,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 16:15:29,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 16:15:29,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:15:29,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:15:29,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:15:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-11-23 16:15:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:15:29,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085868517] [2022-11-23 16:15:29,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:15:29,859 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 [2022-11-23 16:15:29,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:15:29,859 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:15:29,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d96d2db-17f9-4d52-9618-049ed069a82c/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:15:30,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:15:30,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:15:31,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 3668 conjuncts, 699 conjunts are in the unsatisfiable core [2022-11-23 16:15:31,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:15:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:15:38,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:16:14,081 WARN L233 SmtUtils]: Spent 24.00s on a formula simplification. DAG size of input: 781 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:49,135 WARN L233 SmtUtils]: Spent 4.49m on a formula simplification. DAG size of input: 981 DAG size of output: 653 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)