./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI --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 8c28d0290ce8ece097f92762e630373f1e6a86a30ad86849326ba497513d1894 --- 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-5e519f3 [2022-11-03 02:06:08,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:08,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:08,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:08,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:08,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:08,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:08,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:08,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:08,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:08,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:08,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:08,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:08,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:08,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:08,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:08,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:08,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:08,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:08,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:08,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:08,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:08,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:08,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:08,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:08,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:08,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:08,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:08,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:08,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:08,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:08,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:08,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:08,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:08,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:08,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:08,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:08,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:08,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:08,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:08,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:08,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:06:08,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:08,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:08,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:08,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:08,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:08,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:08,645 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:08,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:08,645 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:08,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:08,647 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:08,647 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:08,647 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:08,648 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:08,648 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:08,648 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:08,648 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:08,649 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:08,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:08,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:08,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:08,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:08,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:08,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:08,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:08,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:08,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:08,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:08,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:08,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:08,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:08,655 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:08,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:08,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:08,656 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:08,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:08,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:08,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:08,657 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_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c28d0290ce8ece097f92762e630373f1e6a86a30ad86849326ba497513d1894 [2022-11-03 02:06:08,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:08,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:08,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:08,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:08,973 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:08,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c [2022-11-03 02:06:09,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/4c43ae2ff/4befac2e026145fe914c9799ddfe8d66/FLAG7dbeae082 [2022-11-03 02:06:09,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:09,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c [2022-11-03 02:06:09,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/4c43ae2ff/4befac2e026145fe914c9799ddfe8d66/FLAG7dbeae082 [2022-11-03 02:06:10,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/4c43ae2ff/4befac2e026145fe914c9799ddfe8d66 [2022-11-03 02:06:10,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:10,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:10,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:10,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:10,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:10,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420a5291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10, skipping insertion in model container [2022-11-03 02:06:10,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:10,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:06:10,202 WARN L230 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_6bbecada-db34-47e7-8c41-5c21e8851aec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c[1117,1130] [2022-11-03 02:06:10,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:10,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:06:10,268 WARN L230 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_6bbecada-db34-47e7-8c41-5c21e8851aec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c[1117,1130] [2022-11-03 02:06:10,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:10,310 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:06:10,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10 WrapperNode [2022-11-03 02:06:10,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:10,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:10,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:06:10,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:06:10,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,350 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-11-03 02:06:10,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:10,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:06:10,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:06:10,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:06:10,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:06:10,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:06:10,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:06:10,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:06:10,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (1/1) ... [2022-11-03 02:06:10,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:10,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:10,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:06:10,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:06:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:06:10,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:06:10,542 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:06:10,545 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:10,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:10,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:10,741 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:06:10,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:10 BoogieIcfgContainer [2022-11-03 02:06:10,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:10,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:10,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:10,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:10,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:10" (1/3) ... [2022-11-03 02:06:10,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476a891d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:10, skipping insertion in model container [2022-11-03 02:06:10,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:10" (2/3) ... [2022-11-03 02:06:10,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476a891d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:10, skipping insertion in model container [2022-11-03 02:06:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:10" (3/3) ... [2022-11-03 02:06:10,761 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.count4.c [2022-11-03 02:06:10,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:10,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:06:10,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:06:10,908 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;@efdffba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:06:10,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:06:10,925 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) [2022-11-03 02:06:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:06:10,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:10,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:06:10,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-03 02:06:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41557785] [2022-11-03 02:06:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:10,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:11,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:11,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41557785] [2022-11-03 02:06:11,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41557785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:11,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:11,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445992979] [2022-11-03 02:06:11,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:11,542 INFO L87 Difference]: Start difference. First 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-03 02:06:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:11,638 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-03 02:06:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:06:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-03 02:06:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:11,651 INFO L225 Difference]: With dead ends: 15 [2022-11-03 02:06:11,652 INFO L226 Difference]: Without dead ends: 9 [2022-11-03 02:06:11,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:06:11,661 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:11,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-03 02:06:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-03 02:06:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-03 02:06:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-03 02:06:11,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-03 02:06:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:11,699 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-03 02:06:11,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-03 02:06:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-03 02:06:11,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:06:11,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:11,700 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 02:06:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:06:11,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2022-11-03 02:06:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:11,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995387513] [2022-11-03 02:06:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:12,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:12,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995387513] [2022-11-03 02:06:12,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995387513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:06:12,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664194398] [2022-11-03 02:06:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:12,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:12,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:12,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:06:12,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:06:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:12,578 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:06:12,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:45,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:47,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664194398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:47,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613822243] [2022-11-03 02:07:47,651 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-03 02:07:47,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:47,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:47,663 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:47,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:07:47,968 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:07:48,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '90#(and (= |ULTIMATE.start_main_~var_5~0#1| 1) (<= 15 |ULTIMATE.start_main_~var_8~0#1|) (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 15) (= |ULTIMATE.start_main_~msb_SORT_9~0#1| 1) (<= |ULTIMATE.start_main_~var_8~0#1| 15) (= |ULTIMATE.start_main_~var_2~0#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod |ULTIMATE.start_main_~bad_11_arg_0~0#1| 256) 0) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~mask_SORT_9~0#1| 1) (= |ULTIMATE.start_main_~msb_SORT_1~0#1| 8) (= |ULTIMATE.start_main_~var_10~0#1| (ite (= (mod |ULTIMATE.start_main_~var_10_arg_1~0#1| 256) (mod |ULTIMATE.start_main_~var_10_arg_0~0#1| 256)) 1 0)) (<= 0 |ULTIMATE.start_main_~init_4_arg_1~0#1|) (<= |ULTIMATE.start_main_~init_4_arg_1~0#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~var_10~0#1| |ULTIMATE.start_main_~bad_11_arg_0~0#1|) (= |ULTIMATE.start_main_~var_8~0#1| |ULTIMATE.start_main_~var_10_arg_1~0#1|) (= |ULTIMATE.start_main_~state_3~0#1| |ULTIMATE.start_main_~var_10_arg_0~0#1|))' at error location [2022-11-03 02:07:48,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:07:48,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:07:48,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-03 02:07:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140159223] [2022-11-03 02:07:48,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:07:48,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:07:48,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:07:48,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:07:48,257 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-11-03 02:07:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:48,336 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-03 02:07:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:07:48,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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 7 [2022-11-03 02:07:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:48,337 INFO L225 Difference]: With dead ends: 15 [2022-11-03 02:07:48,337 INFO L226 Difference]: Without dead ends: 13 [2022-11-03 02:07:48,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:07:48,339 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-03 02:07:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2022-11-03 02:07:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-11-03 02:07:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-11-03 02:07:48,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2022-11-03 02:07:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:48,343 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-11-03 02:07:48,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-11-03 02:07:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-11-03 02:07:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:07:48,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:48,345 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2022-11-03 02:07:48,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 02:07:48,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2022-11-03 02:07:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445660974] [2022-11-03 02:07:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:48,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:07:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:48,671 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:07:48,672 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:07:48,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:07:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:07:48,678 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-03 02:07:48,682 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:07:48,696 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:07:48,697 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:07:48,697 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:07:48,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:07:48 BoogieIcfgContainer [2022-11-03 02:07:48,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:07:48,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:07:48,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:07:48,704 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:07:48,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:10" (3/4) ... [2022-11-03 02:07:48,707 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:07:48,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:07:48,708 INFO L158 Benchmark]: Toolchain (without parser) took 98700.16ms. Allocated memory was 92.3MB in the beginning and 610.3MB in the end (delta: 518.0MB). Free memory was 57.2MB in the beginning and 426.2MB in the end (delta: -369.0MB). Peak memory consumption was 148.8MB. Max. memory is 16.1GB. [2022-11-03 02:07:48,709 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 64.9MB in the beginning and 64.9MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:07:48,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.91ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 67.6MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:07:48,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.97ms. Allocated memory is still 92.3MB. Free memory was 67.6MB in the beginning and 66.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:07:48,711 INFO L158 Benchmark]: Boogie Preprocessor took 41.50ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 65.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:07:48,711 INFO L158 Benchmark]: RCFGBuilder took 348.81ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 55.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:07:48,712 INFO L158 Benchmark]: TraceAbstraction took 97958.67ms. Allocated memory was 92.3MB in the beginning and 610.3MB in the end (delta: 518.0MB). Free memory was 54.2MB in the beginning and 427.3MB in the end (delta: -373.0MB). Peak memory consumption was 145.3MB. Max. memory is 16.1GB. [2022-11-03 02:07:48,712 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 610.3MB. Free memory was 427.3MB in the beginning and 426.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:07:48,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 64.9MB in the beginning and 64.9MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.91ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 67.6MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.97ms. Allocated memory is still 92.3MB. Free memory was 67.6MB in the beginning and 66.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.50ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 65.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.81ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 55.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 97958.67ms. Allocated memory was 92.3MB in the beginning and 610.3MB in the end (delta: 518.0MB). Free memory was 54.2MB in the beginning and 427.3MB in the end (delta: -373.0MB). Peak memory consumption was 145.3MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 610.3MB. Free memory was 427.3MB in the beginning and 426.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 54. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L29] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 1); [L30] const SORT_9 msb_SORT_9 = (SORT_9)1 << (1 - 1); [L32] const SORT_1 var_2 = 0; [L33] const SORT_1 var_5 = 1; [L34] const SORT_1 var_8 = mask_SORT_1; [L37] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L39] SORT_1 init_4_arg_1 = var_2; [L40] state_3 = init_4_arg_1 VAL [init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, state_3=0, var_2=0, var_5=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=1, state_3=1, var_10=0, var_10_arg_0=0, var_10_arg_1=15, var_2=0, var_5=1, var_6=1, var_6_arg_0=0, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=15, state_3=15, var_10=0, var_10_arg_0=1, var_10_arg_1=15, var_2=0, var_5=1, var_6=15, var_6_arg_0=1, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 97.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 5 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 96.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 500 SizeOfPredicates, 16 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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 [2022-11-03 02:07:48,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/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_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI --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 8c28d0290ce8ece097f92762e630373f1e6a86a30ad86849326ba497513d1894 --- 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-5e519f3 [2022-11-03 02:07:51,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:07:51,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:07:51,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:07:51,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:07:51,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:07:51,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:07:51,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:07:51,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:07:51,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:07:51,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:07:51,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:07:51,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:07:51,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:07:51,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:07:51,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:07:51,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:07:51,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:07:51,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:07:51,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:07:51,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:07:51,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:07:51,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:07:51,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:07:51,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:07:51,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:07:51,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:07:51,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:07:51,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:07:51,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:07:51,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:07:51,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:07:51,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:07:51,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:07:51,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:07:51,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:07:51,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:07:51,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:07:51,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:07:51,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:07:51,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:07:51,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:07:51,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:07:51,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:07:51,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:07:51,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:07:51,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:07:51,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:07:51,183 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:07:51,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:07:51,183 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:07:51,184 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:07:51,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:07:51,185 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:07:51,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:07:51,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:07:51,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:07:51,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:07:51,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:07:51,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:07:51,188 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:07:51,188 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:07:51,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:07:51,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:07:51,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:07:51,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:07:51,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:07:51,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:07:51,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:51,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:07:51,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:07:51,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:07:51,191 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:07:51,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:51,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:07:51,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:07:51,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:07:51,193 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_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c28d0290ce8ece097f92762e630373f1e6a86a30ad86849326ba497513d1894 [2022-11-03 02:07:51,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:07:51,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:07:51,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:07:51,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:07:51,655 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:07:51,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c [2022-11-03 02:07:51,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/46282d60d/a8cc989d520b4118ad1bfb6b2ce7c063/FLAG73c36f3eb [2022-11-03 02:07:52,207 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:07:52,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c [2022-11-03 02:07:52,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/46282d60d/a8cc989d520b4118ad1bfb6b2ce7c063/FLAG73c36f3eb [2022-11-03 02:07:52,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/data/46282d60d/a8cc989d520b4118ad1bfb6b2ce7c063 [2022-11-03 02:07:52,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:07:52,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:07:52,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:52,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:07:52,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:07:52,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3397257e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52, skipping insertion in model container [2022-11-03 02:07:52,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:07:52,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:07:52,769 WARN L230 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_6bbecada-db34-47e7-8c41-5c21e8851aec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c[1117,1130] [2022-11-03 02:07:52,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:52,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:07:52,838 WARN L230 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_6bbecada-db34-47e7-8c41-5c21e8851aec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count4.c[1117,1130] [2022-11-03 02:07:52,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:52,880 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:07:52,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52 WrapperNode [2022-11-03 02:07:52,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:52,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:52,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:07:52,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:07:52,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,914 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-11-03 02:07:52,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:52,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:07:52,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:07:52,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:07:52,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:07:52,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:07:52,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:07:52,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:07:52,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (1/1) ... [2022-11-03 02:07:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:52,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:07:52,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:07:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:07:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:07:53,096 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:07:53,098 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:07:53,254 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:07:53,261 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:07:53,261 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:07:53,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:53 BoogieIcfgContainer [2022-11-03 02:07:53,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:07:53,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:07:53,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:07:53,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:07:53,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:07:52" (1/3) ... [2022-11-03 02:07:53,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24183e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:53, skipping insertion in model container [2022-11-03 02:07:53,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:52" (2/3) ... [2022-11-03 02:07:53,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24183e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:53, skipping insertion in model container [2022-11-03 02:07:53,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:53" (3/3) ... [2022-11-03 02:07:53,287 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.count4.c [2022-11-03 02:07:53,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:07:53,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:07:53,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:53,387 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;@d6bcd61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:53,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:07:53,394 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) [2022-11-03 02:07:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:07:53,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:53,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:07:53,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:07:53,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470030305] [2022-11-03 02:07:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:53,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:53,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:53,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:07:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:53,503 WARN L261 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:07:53,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:53,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:53,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:53,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470030305] [2022-11-03 02:07:53,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470030305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:53,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:53,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:07:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010693365] [2022-11-03 02:07:53,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:53,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:07:53,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:53,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:07:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:07:53,763 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) [2022-11-03 02:07:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:53,819 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-03 02:07:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:07:53,824 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 [2022-11-03 02:07:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:53,832 INFO L225 Difference]: With dead ends: 20 [2022-11-03 02:07:53,836 INFO L226 Difference]: Without dead ends: 11 [2022-11-03 02:07:53,839 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 [2022-11-03 02:07:53,845 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:53,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-03 02:07:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-03 02:07:53,889 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) [2022-11-03 02:07:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-03 02:07:53,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-03 02:07:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:53,892 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-03 02:07:53,892 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) [2022-11-03 02:07:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-03 02:07:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:07:53,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:53,894 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:53,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:54,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:54,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-03 02:07:54,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:54,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676024470] [2022-11-03 02:07:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:54,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:54,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:07:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:54,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:07:54,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:54,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:54,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:54,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676024470] [2022-11-03 02:07:54,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676024470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:54,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [502865912] [2022-11-03 02:07:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:54,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:54,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-03 02:07:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:54,549 WARN L261 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:07:54,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:54,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:54,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [502865912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386648970] [2022-11-03 02:07:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:54,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:54,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:54,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:07:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:54,726 WARN L261 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:07:54,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:54,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:54,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386648970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:54,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:07:54,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-03 02:07:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40208968] [2022-11-03 02:07:54,975 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:07:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:07:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:07:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:07:54,979 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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) [2022-11-03 02:07:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:55,113 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-03 02:07:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:07:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 [2022-11-03 02:07:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:55,115 INFO L225 Difference]: With dead ends: 19 [2022-11-03 02:07:55,115 INFO L226 Difference]: Without dead ends: 17 [2022-11-03 02:07:55,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:07:55,120 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:55,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-03 02:07:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-03 02:07:55,134 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) [2022-11-03 02:07:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-03 02:07:55,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-03 02:07:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:55,135 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-03 02:07:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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) [2022-11-03 02:07:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-03 02:07:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:07:55,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:55,137 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-03 02:07:55,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:55,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 02:07:55,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 02:07:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:55,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-03 02:07:55,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:55,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687841653] [2022-11-03 02:07:55,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:07:55,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:55,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:55,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:55,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:07:55,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:07:55,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:07:55,789 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:07:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:56,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:56,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:56,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687841653] [2022-11-03 02:07:56,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687841653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:56,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1747758382] [2022-11-03 02:07:56,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:07:56,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:56,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:56,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 02:07:56,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:07:56,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:07:56,317 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:07:56,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:56,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:56,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1747758382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:56,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230798508] [2022-11-03 02:07:56,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:07:56,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:56,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:56,545 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:07:56,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:07:56,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:07:56,603 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:07:56,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:56,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:56,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230798508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:56,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:07:56,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 14 [2022-11-03 02:07:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229714519] [2022-11-03 02:07:56,934 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:07:56,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:07:56,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:56,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:07:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:07:56,936 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2022-11-03 02:07:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:57,280 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-03 02:07:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:07:57,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 [2022-11-03 02:07:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:57,282 INFO L225 Difference]: With dead ends: 31 [2022-11-03 02:07:57,282 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:07:57,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:07:57,283 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:57,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 33 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:07:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-03 02:07:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2022-11-03 02:07:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-03 02:07:57,293 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-03 02:07:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:57,294 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-03 02:07:57,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2022-11-03 02:07:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-03 02:07:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:07:57,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:57,296 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-03 02:07:57,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-03 02:07:57,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-03 02:07:57,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-03 02:07:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:57,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-03 02:07:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:57,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161196080] [2022-11-03 02:07:57,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:07:57,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:57,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:57,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:57,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:07:57,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-03 02:07:57,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:07:57,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 02:07:57,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:58,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:59,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:59,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161196080] [2022-11-03 02:07:59,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161196080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:59,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1435377704] [2022-11-03 02:07:59,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:07:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:59,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:59,084 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:59,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 02:07:59,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-03 02:07:59,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:07:59,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 02:07:59,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:59,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:59,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1435377704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:59,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595854632] [2022-11-03 02:07:59,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:07:59,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:59,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:59,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:59,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:07:59,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-03 02:07:59,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:07:59,837 WARN L261 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:07:59,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:00,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:00,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595854632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:00,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:08:00,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 12, 13] total 23 [2022-11-03 02:08:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115259018] [2022-11-03 02:08:00,589 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:08:00,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:08:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:08:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:08:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:08:00,594 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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) [2022-11-03 02:08:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:01,793 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2022-11-03 02:08:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:08:01,796 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 26 [2022-11-03 02:08:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:01,798 INFO L225 Difference]: With dead ends: 55 [2022-11-03 02:08:01,798 INFO L226 Difference]: Without dead ends: 53 [2022-11-03 02:08:01,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 02:08:01,799 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:01,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 37 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:08:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-03 02:08:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-03 02:08:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2022-11-03 02:08:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-11-03 02:08:01,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-11-03 02:08:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:01,815 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-11-03 02:08:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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) [2022-11-03 02:08:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-11-03 02:08:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 02:08:01,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:01,817 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2022-11-03 02:08:01,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-03 02:08:02,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:02,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:02,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:08:02,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash -779438813, now seen corresponding path program 4 times [2022-11-03 02:08:02,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:08:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409877943] [2022-11-03 02:08:02,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:08:02,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:08:02,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:08:02,433 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:08:02,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:08:02,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:08:02,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-03 02:08:02,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:08:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:08:02,623 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 02:08:02,624 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:08:02,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:08:02,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:02,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:08:02,838 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-03 02:08:02,841 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:08:02,882 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,887 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,887 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,888 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,888 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,888 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,888 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,889 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,889 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,889 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,889 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,890 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,890 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,890 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,890 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,890 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:08:02 BoogieIcfgContainer [2022-11-03 02:08:02,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:08:02,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:08:02,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:08:02,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:08:02,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:53" (3/4) ... [2022-11-03 02:08:02,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:08:02,928 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,928 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,929 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,929 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,929 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,929 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,929 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,929 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,930 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,931 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:08:02,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:08:02,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:08:02,994 INFO L158 Benchmark]: Toolchain (without parser) took 10381.37ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 55.6MB in the beginning and 44.5MB in the end (delta: 11.1MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2022-11-03 02:08:02,994 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 92.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:08:02,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.90ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 59.0MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:08:02,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.93ms. Allocated memory is still 75.5MB. Free memory was 59.0MB in the beginning and 57.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:08:02,995 INFO L158 Benchmark]: Boogie Preprocessor took 22.22ms. Allocated memory is still 75.5MB. Free memory was 57.5MB in the beginning and 56.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:08:02,996 INFO L158 Benchmark]: RCFGBuilder took 324.83ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 47.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:08:02,996 INFO L158 Benchmark]: TraceAbstraction took 9629.69ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 46.7MB in the beginning and 50.8MB in the end (delta: -4.1MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2022-11-03 02:08:02,997 INFO L158 Benchmark]: Witness Printer took 82.42ms. Allocated memory is still 134.2MB. Free memory was 50.8MB in the beginning and 44.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 02:08:02,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 92.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.90ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 59.0MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.93ms. Allocated memory is still 75.5MB. Free memory was 59.0MB in the beginning and 57.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.22ms. Allocated memory is still 75.5MB. Free memory was 57.5MB in the beginning and 56.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.83ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 47.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9629.69ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 46.7MB in the beginning and 50.8MB in the end (delta: -4.1MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. * Witness Printer took 82.42ms. Allocated memory is still 134.2MB. Free memory was 50.8MB in the beginning and 44.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L29] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 1); [L30] const SORT_9 msb_SORT_9 = (SORT_9)1 << (1 - 1); [L32] const SORT_1 var_2 = 0; [L33] const SORT_1 var_5 = 1; [L34] const SORT_1 var_8 = mask_SORT_1; [L37] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L39] SORT_1 init_4_arg_1 = var_2; [L40] state_3 = init_4_arg_1 VAL [init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, state_3=0, var_2=0, var_5=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=1, state_3=1, var_10=0, var_10_arg_0=0, var_10_arg_1=15, var_2=0, var_5=1, var_6=1, var_6_arg_0=0, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=2, state_3=2, var_10=0, var_10_arg_0=1, var_10_arg_1=15, var_2=0, var_5=1, var_6=2, var_6_arg_0=1, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=3, state_3=3, var_10=0, var_10_arg_0=2, var_10_arg_1=15, var_2=0, var_5=1, var_6=3, var_6_arg_0=2, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=4, state_3=4, var_10=0, var_10_arg_0=3, var_10_arg_1=15, var_2=0, var_5=1, var_6=4, var_6_arg_0=3, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=5, state_3=5, var_10=0, var_10_arg_0=4, var_10_arg_1=15, var_2=0, var_5=1, var_6=5, var_6_arg_0=4, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=6, state_3=6, var_10=0, var_10_arg_0=5, var_10_arg_1=15, var_2=0, var_5=1, var_6=6, var_6_arg_0=5, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=7, state_3=7, var_10=0, var_10_arg_0=6, var_10_arg_1=15, var_2=0, var_5=1, var_6=7, var_6_arg_0=6, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=8, state_3=8, var_10=0, var_10_arg_0=7, var_10_arg_1=15, var_2=0, var_5=1, var_6=8, var_6_arg_0=7, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=9, state_3=9, var_10=0, var_10_arg_0=8, var_10_arg_1=15, var_2=0, var_5=1, var_6=9, var_6_arg_0=8, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=10, state_3=10, var_10=0, var_10_arg_0=9, var_10_arg_1=15, var_2=0, var_5=1, var_6=10, var_6_arg_0=9, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=11, state_3=11, var_10=0, var_10_arg_0=10, var_10_arg_1=15, var_2=0, var_5=1, var_6=11, var_6_arg_0=10, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=12, state_3=12, var_10=0, var_10_arg_0=11, var_10_arg_1=15, var_2=0, var_5=1, var_6=12, var_6_arg_0=11, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=13, state_3=13, var_10=0, var_10_arg_0=12, var_10_arg_1=15, var_2=0, var_5=1, var_6=13, var_6_arg_0=12, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=14, state_3=14, var_10=0, var_10_arg_0=13, var_10_arg_1=15, var_2=0, var_5=1, var_6=14, var_6_arg_0=13, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L49] RET __VERIFIER_assert(!(bad_11_arg_0)) [L51] SORT_1 var_6_arg_0 = state_3; [L52] SORT_1 var_6_arg_1 = var_5; [L53] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L54] var_6 = var_6 & mask_SORT_1 [L55] SORT_1 next_7_arg_1 = var_6; [L57] state_3 = next_7_arg_1 VAL [bad_11_arg_0=0, init_4_arg_1=0, mask_SORT_1=15, mask_SORT_9=1, msb_SORT_1=8, msb_SORT_9=1, next_7_arg_1=15, state_3=15, var_10=0, var_10_arg_0=14, var_10_arg_1=15, var_2=0, var_5=1, var_6=15, var_6_arg_0=14, var_6_arg_1=1, var_8=15] [L45] SORT_1 var_10_arg_0 = state_3; [L46] SORT_1 var_10_arg_1 = var_8; [L47] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L48] SORT_9 bad_11_arg_0 = var_10; [L49] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 362 IncrementalHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 17 mSDtfsCounter, 362 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 7238 SizeOfPredicates, 262 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 316 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/564 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 02:08:03,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbecada-db34-47e7-8c41-5c21e8851aec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE