./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0 --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 5781aa0e97f21edc6279d327a58f923d207d456768643be187e6a82dd611a001 --- 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-e04fb08 [2022-11-16 20:15:40,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:15:40,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:15:40,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:15:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:15:40,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:15:40,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:15:40,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:15:40,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:15:40,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:15:40,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:15:40,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:15:40,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:15:40,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:15:40,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:15:40,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:15:40,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:15:40,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:15:40,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:15:40,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:15:40,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:15:40,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:15:40,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:15:40,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:15:40,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:15:40,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:15:40,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:15:40,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:15:40,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:15:40,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:15:40,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:15:40,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:15:40,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:15:40,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:15:40,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:15:40,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:15:40,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:15:40,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:15:40,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:15:40,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:15:40,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:15:40,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:15:40,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:15:40,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:15:40,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:15:40,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:15:40,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:15:40,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:15:40,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:15:40,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:15:40,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:15:40,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:15:40,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:15:40,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:15:40,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:15:40,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:15:40,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:15:40,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:15:40,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:15:40,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:15:40,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:15:40,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:15:40,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:15:40,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:15:40,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:15:40,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:15:40,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:15:40,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:15:40,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:15:40,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:15:40,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:15:40,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:15:40,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:15:40,575 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:15:40,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:15:40,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:15:40,576 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:15:40,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:15:40,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:15:40,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:15:40,576 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5781aa0e97f21edc6279d327a58f923d207d456768643be187e6a82dd611a001 [2022-11-16 20:15:40,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:15:40,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:15:40,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:15:40,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:15:40,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:15:40,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c [2022-11-16 20:15:41,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/2e2478ef3/a0a9de4f511d486f990308d992fbc139/FLAGb5924af90 [2022-11-16 20:15:41,567 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:15:41,568 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c [2022-11-16 20:15:41,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/2e2478ef3/a0a9de4f511d486f990308d992fbc139/FLAGb5924af90 [2022-11-16 20:15:41,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/2e2478ef3/a0a9de4f511d486f990308d992fbc139 [2022-11-16 20:15:41,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:15:41,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:15:41,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:15:41,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:15:41,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:15:41,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:15:41" (1/1) ... [2022-11-16 20:15:41,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a5f87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:41, skipping insertion in model container [2022-11-16 20:15:41,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:15:41" (1/1) ... [2022-11-16 20:15:41,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:15:41,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:15:42,168 WARN L229 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c[1107,1120] [2022-11-16 20:15:42,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:15:42,307 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:15:42,317 WARN L229 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c[1107,1120] [2022-11-16 20:15:42,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:15:42,391 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:15:42,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42 WrapperNode [2022-11-16 20:15:42,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:15:42,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:15:42,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:15:42,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:15:42,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,470 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 554 [2022-11-16 20:15:42,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:15:42,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:15:42,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:15:42,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:15:42,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:15:42,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:15:42,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:15:42,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:15:42,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (1/1) ... [2022-11-16 20:15:42,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:15:42,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:15:42,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:15:42,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:15:42,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:15:42,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:15:42,861 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:15:42,865 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:15:43,532 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:15:44,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:15:44,148 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:15:44,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:44 BoogieIcfgContainer [2022-11-16 20:15:44,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:15:44,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:15:44,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:15:44,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:15:44,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:15:41" (1/3) ... [2022-11-16 20:15:44,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bb050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:15:44, skipping insertion in model container [2022-11-16 20:15:44,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:42" (2/3) ... [2022-11-16 20:15:44,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bb050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:15:44, skipping insertion in model container [2022-11-16 20:15:44,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:44" (3/3) ... [2022-11-16 20:15:44,169 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c [2022-11-16 20:15:44,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:15:44,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:15:44,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:15:44,292 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;@e981ac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:15:44,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:15:44,303 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) [2022-11-16 20:15:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:15:44,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:15:44,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:15:44,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:15:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:15:44,319 INFO L85 PathProgramCache]: Analyzing trace with hash 8205627, now seen corresponding path program 1 times [2022-11-16 20:15:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:15:44,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740470008] [2022-11-16 20:15:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:15:44,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:15:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:15:44,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:15:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:15:44,798 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:15:44,800 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:15:44,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:15:44,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:15:44,809 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 20:15:44,813 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:15:44,846 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 20:15:44,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:15:44 BoogieIcfgContainer [2022-11-16 20:15:44,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:15:44,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:15:44,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:15:44,857 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:15:44,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:44" (3/4) ... [2022-11-16 20:15:44,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 20:15:44,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:15:44,863 INFO L158 Benchmark]: Toolchain (without parser) took 2952.02ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 75.1MB in the beginning and 103.3MB in the end (delta: -28.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-11-16 20:15:44,863 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:15:44,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.28ms. Allocated memory is still 115.3MB. Free memory was 75.0MB in the beginning and 81.6MB in the end (delta: -6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:15:44,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.21ms. Allocated memory is still 115.3MB. Free memory was 81.6MB in the beginning and 76.9MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 20:15:44,865 INFO L158 Benchmark]: Boogie Preprocessor took 47.50ms. Allocated memory is still 115.3MB. Free memory was 76.9MB in the beginning and 74.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:15:44,866 INFO L158 Benchmark]: RCFGBuilder took 1632.89ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 74.3MB in the beginning and 72.0MB in the end (delta: 2.2MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-11-16 20:15:44,867 INFO L158 Benchmark]: TraceAbstraction took 698.14ms. Allocated memory is still 155.2MB. Free memory was 70.9MB in the beginning and 103.3MB in the end (delta: -32.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:15:44,867 INFO L158 Benchmark]: Witness Printer took 5.21ms. Allocated memory is still 155.2MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:15:44,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.28ms. Allocated memory is still 115.3MB. Free memory was 75.0MB in the beginning and 81.6MB in the end (delta: -6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.21ms. Allocated memory is still 115.3MB. Free memory was 81.6MB in the beginning and 76.9MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.50ms. Allocated memory is still 115.3MB. Free memory was 76.9MB in the beginning and 74.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1632.89ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 74.3MB in the beginning and 72.0MB in the end (delta: 2.2MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * TraceAbstraction took 698.14ms. Allocated memory is still 155.2MB. Free memory was 70.9MB in the beginning and 103.3MB in the end (delta: -32.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.21ms. Allocated memory is still 155.2MB. Free memory is still 103.3MB. There was no memory consumed. 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: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of bitwiseComplement at line 166, overapproximation of bitwiseAnd at line 151. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_31 mask_SORT_31 = (SORT_31)-1 >> (sizeof(SORT_31) * 8 - 4); [L35] const SORT_31 msb_SORT_31 = (SORT_31)1 << (4 - 1); [L37] const SORT_67 mask_SORT_67 = (SORT_67)-1 >> (sizeof(SORT_67) * 8 - 10); [L38] const SORT_67 msb_SORT_67 = (SORT_67)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 0; [L42] const SORT_1 var_21 = 1; [L43] const SORT_67 var_68 = 0; [L44] const SORT_10 var_123 = 104; [L45] const SORT_10 var_140 = 1; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_1 input_5; [L50] SORT_1 input_6; [L51] SORT_1 input_29; [L52] SORT_31 input_32; [L53] SORT_1 input_34; [L54] SORT_31 input_36; [L55] SORT_1 input_38; [L56] SORT_1 input_44; [L57] SORT_1 input_46; [L58] SORT_1 input_48; [L59] SORT_3 input_52; [L60] SORT_1 input_55; [L61] SORT_1 input_63; [L62] SORT_1 input_73; [L63] SORT_1 input_79; [L64] SORT_1 input_80; [L65] SORT_1 input_92; [L66] SORT_1 input_99; [L67] SORT_1 input_105; [L68] SORT_1 input_111; [L69] SORT_1 input_117; [L70] SORT_1 input_118; [L71] SORT_1 input_119; [L72] SORT_67 input_138; [L73] SORT_1 input_147; [L74] SORT_1 input_148; [L75] SORT_1 input_149; [L77] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_67 state_69 = __VERIFIER_nondet_ushort() & mask_SORT_67; [L89] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 init_9_arg_1 = var_7; [L92] state_8 = init_9_arg_1 [L93] SORT_1 init_15_arg_1 = var_7; [L94] state_14 = init_15_arg_1 [L95] SORT_1 init_26_arg_1 = var_7; [L96] state_25 = init_26_arg_1 [L97] SORT_1 init_28_arg_1 = var_7; [L98] state_27 = init_28_arg_1 [L99] SORT_1 init_41_arg_1 = var_7; [L100] state_40 = init_41_arg_1 [L101] SORT_1 init_43_arg_1 = var_7; [L102] state_42 = init_43_arg_1 [L103] SORT_1 init_51_arg_1 = var_21; [L104] state_50 = init_51_arg_1 [L105] SORT_1 init_58_arg_1 = var_7; [L106] state_57 = init_58_arg_1 [L107] SORT_1 init_60_arg_1 = var_7; [L108] state_59 = init_60_arg_1 [L109] SORT_1 init_62_arg_1 = var_7; [L110] state_61 = init_62_arg_1 [L111] SORT_1 init_66_arg_1 = var_7; [L112] state_65 = init_66_arg_1 [L113] SORT_67 init_70_arg_1 = var_68; [L114] state_69 = init_70_arg_1 [L115] SORT_1 init_72_arg_1 = var_7; [L116] state_71 = init_72_arg_1 VAL [init_15_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_51_arg_1=1, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_31=15, mask_SORT_67=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_31=8, msb_SORT_67=512, state_14=0, state_25=0, state_27=0, state_40=0, state_42=0, state_50=1, state_57=0, state_59=0, state_61=0, state_65=0, state_69=0, state_71=0, state_8=0, var_12=0, var_123=104, var_140=1, var_21=1, var_68=0, var_7=0] [L119] input_2 = __VERIFIER_nondet_uchar() [L120] input_4 = __VERIFIER_nondet_uchar() [L121] input_5 = __VERIFIER_nondet_uchar() [L122] input_6 = __VERIFIER_nondet_uchar() [L123] input_29 = __VERIFIER_nondet_uchar() [L124] input_32 = __VERIFIER_nondet_uchar() [L125] input_34 = __VERIFIER_nondet_uchar() [L126] input_36 = __VERIFIER_nondet_uchar() [L127] input_38 = __VERIFIER_nondet_uchar() [L128] input_44 = __VERIFIER_nondet_uchar() [L129] input_46 = __VERIFIER_nondet_uchar() [L130] input_48 = __VERIFIER_nondet_uchar() [L131] input_52 = __VERIFIER_nondet_uchar() [L132] input_55 = __VERIFIER_nondet_uchar() [L133] input_63 = __VERIFIER_nondet_uchar() [L134] input_73 = __VERIFIER_nondet_uchar() [L135] input_79 = __VERIFIER_nondet_uchar() [L136] input_80 = __VERIFIER_nondet_uchar() [L137] input_92 = __VERIFIER_nondet_uchar() [L138] input_99 = __VERIFIER_nondet_uchar() [L139] input_105 = __VERIFIER_nondet_uchar() [L140] input_111 = __VERIFIER_nondet_uchar() [L141] input_117 = __VERIFIER_nondet_uchar() [L142] input_118 = __VERIFIER_nondet_uchar() [L143] input_119 = __VERIFIER_nondet_uchar() [L144] input_138 = __VERIFIER_nondet_ushort() [L145] input_147 = __VERIFIER_nondet_uchar() [L146] input_148 = __VERIFIER_nondet_uchar() [L147] input_149 = __VERIFIER_nondet_uchar() [L150] SORT_1 var_11_arg_0 = state_8; [L151] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L152] SORT_10 var_11 = var_11_arg_0; [L153] SORT_10 var_13_arg_0 = var_11; [L154] SORT_10 var_13_arg_1 = var_12; [L155] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L156] SORT_1 var_16_arg_0 = state_14; [L157] var_16_arg_0 = var_16_arg_0 & mask_SORT_1 [L158] SORT_10 var_16 = var_16_arg_0; [L159] SORT_10 var_17_arg_0 = var_16; [L160] SORT_10 var_17_arg_1 = var_12; [L161] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L162] SORT_1 var_18_arg_0 = var_13; [L163] SORT_1 var_18_arg_1 = var_17; [L164] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L165] SORT_1 var_22_arg_0 = var_18; [L166] SORT_1 var_22 = ~var_22_arg_0; [L167] SORT_1 var_23_arg_0 = var_21; [L168] SORT_1 var_23_arg_1 = var_22; [L169] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L170] var_23 = var_23 & mask_SORT_1 [L171] SORT_1 bad_24_arg_0 = var_23; [L172] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] 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: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 20:15:44,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0 --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 5781aa0e97f21edc6279d327a58f923d207d456768643be187e6a82dd611a001 --- 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-e04fb08 [2022-11-16 20:15:47,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:15:47,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:15:47,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:15:47,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:15:47,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:15:47,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:15:47,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:15:47,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:15:47,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:15:47,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:15:47,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:15:47,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:15:47,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:15:47,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:15:47,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:15:47,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:15:47,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:15:47,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:15:47,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:15:47,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:15:47,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:15:47,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:15:47,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:15:47,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:15:47,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:15:47,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:15:47,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:15:47,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:15:47,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:15:47,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:15:47,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:15:47,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:15:47,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:15:47,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:15:47,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:15:47,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:15:47,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:15:47,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:15:47,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:15:47,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:15:47,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 20:15:47,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:15:47,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:15:47,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:15:47,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:15:47,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:15:47,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:15:47,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:15:47,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:15:47,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:15:47,504 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:15:47,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:15:47,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:15:47,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:15:47,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:15:47,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:15:47,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:15:47,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:15:47,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:15:47,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:15:47,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:15:47,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:15:47,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:15:47,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:15:47,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:15:47,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:15:47,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:15:47,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:15:47,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:15:47,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:15:47,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:15:47,513 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:15:47,513 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:15:47,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:15:47,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:15:47,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:15:47,514 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5781aa0e97f21edc6279d327a58f923d207d456768643be187e6a82dd611a001 [2022-11-16 20:15:47,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:15:47,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:15:47,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:15:47,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:15:47,983 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:15:47,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c [2022-11-16 20:15:48,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/cf6434049/1339e75d76164cd6bbbbacb2621a226c/FLAG8d4d288e3 [2022-11-16 20:15:48,600 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:15:48,603 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c [2022-11-16 20:15:48,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/cf6434049/1339e75d76164cd6bbbbacb2621a226c/FLAG8d4d288e3 [2022-11-16 20:15:48,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/data/cf6434049/1339e75d76164cd6bbbbacb2621a226c [2022-11-16 20:15:48,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:15:48,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:15:48,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:15:48,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:15:48,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:15:48,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:15:48" (1/1) ... [2022-11-16 20:15:48,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8bf879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:48, skipping insertion in model container [2022-11-16 20:15:48,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:15:48" (1/1) ... [2022-11-16 20:15:48,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:15:48,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:15:49,157 WARN L229 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c[1107,1120] [2022-11-16 20:15:49,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:15:49,302 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:15:49,312 WARN L229 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_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c[1107,1120] [2022-11-16 20:15:49,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:15:49,384 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:15:49,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49 WrapperNode [2022-11-16 20:15:49,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:15:49,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:15:49,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:15:49,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:15:49,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,443 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 435 [2022-11-16 20:15:49,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:15:49,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:15:49,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:15:49,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:15:49,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:15:49,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:15:49,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:15:49,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:15:49,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (1/1) ... [2022-11-16 20:15:49,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:15:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:15:49,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:15:49,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:15:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:15:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:15:49,828 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:15:49,844 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:15:50,346 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:15:50,353 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:15:50,354 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:15:50,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:50 BoogieIcfgContainer [2022-11-16 20:15:50,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:15:50,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:15:50,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:15:50,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:15:50,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:15:48" (1/3) ... [2022-11-16 20:15:50,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77829509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:15:50, skipping insertion in model container [2022-11-16 20:15:50,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:49" (2/3) ... [2022-11-16 20:15:50,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77829509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:15:50, skipping insertion in model container [2022-11-16 20:15:50,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:50" (3/3) ... [2022-11-16 20:15:50,366 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p10.c [2022-11-16 20:15:50,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:15:50,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:15:50,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:15:50,443 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;@66d0fadf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:15:50,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:15:50,448 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) [2022-11-16 20:15:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:15:50,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:15:50,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:15:50,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:15:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:15:50,468 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 20:15:50,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:15:50,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260582523] [2022-11-16 20:15:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:15:50,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:15:50,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:15:50,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:15:50,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 20:15:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:15:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 20:15:50,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:50,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:15:50,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:15:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260582523] [2022-11-16 20:15:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260582523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:15:50,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:15:50,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:15:50,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745306049] [2022-11-16 20:15:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:15:50,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:15:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:15:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:15:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:15:51,022 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) [2022-11-16 20:15:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:15:51,121 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 20:15:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:15:51,128 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 [2022-11-16 20:15:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:15:51,138 INFO L225 Difference]: With dead ends: 20 [2022-11-16 20:15:51,138 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 20:15:51,141 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 [2022-11-16 20:15:51,145 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:15:51,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:15:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 20:15:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 20:15:51,179 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) [2022-11-16 20:15:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 20:15:51,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 20:15:51,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:15:51,182 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 20:15:51,182 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) [2022-11-16 20:15:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 20:15:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:15:51,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:15:51,183 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 20:15:51,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 20:15:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:15:51,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:15:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:15:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 20:15:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:15:51,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325895218] [2022-11-16 20:15:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:15:51,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:15:51,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:15:51,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:15:51,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 20:15:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:15:51,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 20:15:51,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:51,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:15:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:52,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:15:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325895218] [2022-11-16 20:15:52,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325895218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:15:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1724111990] [2022-11-16 20:15:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:15:52,623 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:15:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:15:52,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:15:52,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 20:15:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:15:53,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 20:15:53,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:53,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:15:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1724111990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:15:53,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155166081] [2022-11-16 20:15:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:15:53,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:15:53,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:15:53,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:15:53,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:15:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:15:53,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 20:15:53,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:53,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:15:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:54,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155166081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:15:54,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:15:54,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-11-16 20:15:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425895283] [2022-11-16 20:15:54,815 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:15:54,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 20:15:54,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:15:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 20:15:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 20:15:54,820 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:15:55,015 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 20:15:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:15:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:15:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:15:55,020 INFO L225 Difference]: With dead ends: 16 [2022-11-16 20:15:55,020 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 20:15:55,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:15:55,021 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:15:55,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2022-11-16 20:15:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 20:15:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 20:15:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 20:15:55,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 20:15:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:15:55,027 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 20:15:55,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 20:15:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:15:55,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:15:55,028 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 20:15:55,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:15:55,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 20:15:55,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:15:55,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:15:55,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:15:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:15:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 20:15:55,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:15:55,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139005442] [2022-11-16 20:15:55,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:15:55,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:15:55,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:15:55,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:15:55,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 20:15:55,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:15:55,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:15:56,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 20:15:56,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:56,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:15:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:58,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:15:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139005442] [2022-11-16 20:15:58,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139005442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:15:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [499327595] [2022-11-16 20:15:58,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:15:58,843 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:15:58,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:15:58,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:15:58,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 20:15:59,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:15:59,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:15:59,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 20:15:59,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:59,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:16:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:01,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [499327595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:16:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683008647] [2022-11-16 20:16:01,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:16:01,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:16:01,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:16:01,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:16:01,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:16:01,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:16:01,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:16:01,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 20:16:01,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:16:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:01,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:16:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:03,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683008647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:16:03,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:16:03,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-16 20:16:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804166581] [2022-11-16 20:16:03,412 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:16:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:16:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:16:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:16:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:16:03,415 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:16:03,585 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-16 20:16:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:16:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 20:16:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:16:03,588 INFO L225 Difference]: With dead ends: 19 [2022-11-16 20:16:03,588 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 20:16:03,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-16 20:16:03,589 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:16:03,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-16 20:16:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 20:16:03,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-16 20:16:03,593 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) [2022-11-16 20:16:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-16 20:16:03,593 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-16 20:16:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:16:03,594 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-16 20:16:03,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-16 20:16:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 20:16:03,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:16:03,598 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-16 20:16:03,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:16:03,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:16:04,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:16:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:16:04,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:16:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:16:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-16 20:16:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:16:04,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792981649] [2022-11-16 20:16:04,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:16:04,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:16:04,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:16:04,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:16:04,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 20:16:04,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:16:04,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:16:04,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-16 20:16:04,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:16:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:05,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:16:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:08,829 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:16:08,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792981649] [2022-11-16 20:16:08,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792981649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:16:08,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [638756284] [2022-11-16 20:16:08,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:16:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:16:08,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:16:08,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:16:08,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 20:16:09,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:16:09,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:16:09,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 20:16:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:16:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:10,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:16:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:20,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [638756284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:16:20,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652604393] [2022-11-16 20:16:20,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:16:20,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:16:20,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:16:20,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:16:20,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 20:16:20,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:16:20,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:16:20,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-16 20:16:20,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:16:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:21,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:16:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:28,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652604393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:16:28,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:16:28,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 24 [2022-11-16 20:16:28,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434410607] [2022-11-16 20:16:28,362 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:16:28,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 20:16:28,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:16:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 20:16:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:16:28,364 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2022-11-16 20:16:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:16:28,863 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-16 20:16:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:16:28,866 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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 [2022-11-16 20:16:28,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:16:28,867 INFO L225 Difference]: With dead ends: 23 [2022-11-16 20:16:28,867 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 20:16:28,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=267, Invalid=603, Unknown=0, NotChecked=0, Total=870 [2022-11-16 20:16:28,869 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 36 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:16:28,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 26 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-11-16 20:16:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 20:16:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 20:16:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-16 20:16:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-16 20:16:28,877 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2022-11-16 20:16:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:16:28,878 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-16 20:16:28,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2022-11-16 20:16:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-16 20:16:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 20:16:28,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:16:28,879 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-16 20:16:28,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-11-16 20:16:29,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 20:16:29,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 20:16:29,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:16:29,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:16:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:16:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 4 times [2022-11-16 20:16:29,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:16:29,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589207693] [2022-11-16 20:16:29,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:16:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:16:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:16:29,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:16:29,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 20:16:30,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:16:30,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:16:30,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 178 conjunts are in the unsatisfiable core [2022-11-16 20:16:30,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:16:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:31,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:17:46,221 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 852 DAG size of output: 145 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:46,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:17:46,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589207693] [2022-11-16 20:17:46,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589207693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:17:46,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [169339773] [2022-11-16 20:17:46,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:17:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:17:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:17:46,343 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:17:46,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 20:17:47,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:17:47,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:17:47,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 195 conjunts are in the unsatisfiable core [2022-11-16 20:17:47,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:17:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:48,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:18:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:53,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [169339773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:18:53,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894733096] [2022-11-16 20:18:53,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:18:53,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:18:53,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:18:53,094 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:18:53,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 20:18:53,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:18:53,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:18:53,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-16 20:18:53,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:18:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:54,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:19:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:49,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894733096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:19:49,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:19:49,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 20 [2022-11-16 20:19:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24427505] [2022-11-16 20:19:49,716 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:19:49,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 20:19:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:19:49,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 20:19:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:19:49,717 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:49,819 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-16 20:19:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:19:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 20:19:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:49,821 INFO L225 Difference]: With dead ends: 21 [2022-11-16 20:19:49,821 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 20:19:49,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:19:49,822 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:49,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-16 20:19:49,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 20:19:49,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 20:19:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-16 20:19:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 20:19:49,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-16 20:19:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:49,825 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 20:19:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 20:19:49,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 20:19:49,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:19:49,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-16 20:19:50,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 20:19:50,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 20:19:50,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:50,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 20:19:50,639 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 20:19:50,639 INFO L895 garLoopResultBuilder]: At program point L420(lines 22 421) the Hoare annotation is: false [2022-11-16 20:19:50,639 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 20:19:50,639 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 20:19:50,639 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 20:19:50,640 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-16 20:19:50,640 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-16 20:19:50,640 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-16 20:19:50,640 INFO L895 garLoopResultBuilder]: At program point L117-2(lines 117 419) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_27~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_59~0#1|)) (.cse3 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_40~0#1|)) (.cse4 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_61~0#1|)) (.cse5 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_71~0#1|)) (.cse6 (= (_ bv1 8) |ULTIMATE.start_main_~var_21~0#1|)) (.cse7 (= |ULTIMATE.start_main_~var_21~0#1| |ULTIMATE.start_main_~state_50~0#1|)) (.cse8 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 32)))) (or (and (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_57~0#1|) .cse0 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_14~0#1|) .cse2 (= |ULTIMATE.start_main_~var_7~0#1| (_ bv0 8)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~state_57~0#1|) .cse2 (= |ULTIMATE.start_main_~state_57~0#1| |ULTIMATE.start_main_~state_42~0#1|) .cse3 .cse4 (= (_ bv0 8) |ULTIMATE.start_main_~state_57~0#1|) (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_25~0#1|) .cse5 .cse6 .cse7 (= |ULTIMATE.start_main_~state_71~0#1| |ULTIMATE.start_main_~state_57~0#1|) .cse8 (= (_ bv0 8) |ULTIMATE.start_main_~state_14~0#1|)))) [2022-11-16 20:19:50,640 INFO L899 garLoopResultBuilder]: For program point L117-3(lines 117 419) no Hoare annotation was computed. [2022-11-16 20:19:50,640 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-16 20:19:50,643 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-16 20:19:50,645 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:19:50,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:19:50 BoogieIcfgContainer [2022-11-16 20:19:50,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:19:50,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:19:50,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:19:50,659 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:19:50,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:50" (3/4) ... [2022-11-16 20:19:50,667 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 20:19:50,684 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-16 20:19:50,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 20:19:50,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 20:19:50,751 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:19:50,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:19:50,752 INFO L158 Benchmark]: Toolchain (without parser) took 241848.48ms. Allocated memory was 65.0MB in the beginning and 648.0MB in the end (delta: 583.0MB). Free memory was 44.4MB in the beginning and 227.9MB in the end (delta: -183.5MB). Peak memory consumption was 397.9MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,752 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 92.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:19:50,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.89ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 40.6MB in the end (delta: 3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.58ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 36.7MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,753 INFO L158 Benchmark]: Boogie Preprocessor took 39.11ms. Allocated memory is still 65.0MB. Free memory was 36.7MB in the beginning and 34.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,754 INFO L158 Benchmark]: RCFGBuilder took 872.21ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 34.3MB in the beginning and 54.0MB in the end (delta: -19.7MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,754 INFO L158 Benchmark]: TraceAbstraction took 240299.59ms. Allocated memory was 88.1MB in the beginning and 648.0MB in the end (delta: 559.9MB). Free memory was 53.1MB in the beginning and 235.2MB in the end (delta: -182.1MB). Peak memory consumption was 377.6MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,754 INFO L158 Benchmark]: Witness Printer took 92.78ms. Allocated memory is still 648.0MB. Free memory was 235.2MB in the beginning and 227.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 20:19:50,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 92.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.89ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 40.6MB in the end (delta: 3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.58ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 36.7MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.11ms. Allocated memory is still 65.0MB. Free memory was 36.7MB in the beginning and 34.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 872.21ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 34.3MB in the beginning and 54.0MB in the end (delta: -19.7MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 240299.59ms. Allocated memory was 88.1MB in the beginning and 648.0MB in the end (delta: 559.9MB). Free memory was 53.1MB in the beginning and 235.2MB in the end (delta: -182.1MB). Peak memory consumption was 377.6MB. Max. memory is 16.1GB. * Witness Printer took 92.78ms. Allocated memory is still 648.0MB. Free memory was 235.2MB in the beginning and 227.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 240.2s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 100 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 19 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 213 SyntacticMatches, 25 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 23.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, InterpolantAutomatonStates: 33, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 2 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 367 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 229.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 298 ConstructedInterpolants, 115 QuantifiedInterpolants, 21210 SizeOfPredicates, 1152 NumberOfNonLiveVariables, 10534 ConjunctsInSsa, 1144 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 0/384 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: ((((((((((((var_7 == state_57 && 1bv8 == mask_SORT_1) && cond == 1bv32) && var_7 == state_27) && var_7 == state_14) && var_7 == state_59) && var_7 == 0bv8) && var_7 == state_40) && var_7 == state_61) && var_7 == state_71) && 1bv8 == var_21) && var_21 == state_50) && var_12 == 0bv32) || ((((((((((((((1bv8 == mask_SORT_1 && var_7 == state_27) && state_8 == state_57) && var_7 == state_59) && state_57 == state_42) && var_7 == state_40) && var_7 == state_61) && 0bv8 == state_57) && var_7 == state_25) && var_7 == state_71) && 1bv8 == var_21) && var_21 == state_50) && state_71 == state_57) && var_12 == 0bv32) && 0bv8 == state_14) RESULT: Ultimate proved your program to be correct! [2022-11-16 20:19:50,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07fb0f-ae9c-4178-87c5-7c5c81ec6efd/bin/utaipan-Xvt2sAort0/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 Result: TRUE