./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:22:50,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:22:50,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:22:50,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:22:50,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:22:50,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:22:50,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:22:50,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:22:50,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:22:50,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:22:50,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:22:50,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:22:50,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:22:50,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:22:50,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:22:50,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:22:50,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:22:50,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:22:50,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:22:50,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:22:50,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:22:50,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:22:50,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:22:50,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:22:51,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:22:51,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:22:51,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:22:51,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:22:51,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:22:51,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:22:51,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:22:51,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:22:51,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:22:51,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:22:51,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:22:51,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:22:51,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:22:51,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:22:51,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:22:51,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:22:51,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:22:51,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:22:51,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:22:51,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:22:51,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:22:51,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:22:51,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:22:51,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:22:51,063 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:22:51,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:22:51,064 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:22:51,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:22:51,065 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:22:51,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:22:51,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:22:51,065 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:22:51,066 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:22:51,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:22:51,066 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:22:51,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:22:51,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:22:51,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:22:51,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:22:51,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:22:51,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:22:51,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:22:51,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:22:51,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:22:51,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:22:51,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:22:51,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:22:51,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:51,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:22:51,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:22:51,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:22:51,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:22:51,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:22:51,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:22:51,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:22:51,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:22:51,072 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_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 [2022-11-23 14:22:51,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:22:51,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:22:51,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:22:51,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:22:51,407 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:22:51,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-23 14:22:54,456 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:22:54,680 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:22:54,681 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-23 14:22:54,704 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data/883f98ece/2e7b30facf0c44318a10b129e7d5da7d/FLAGcddffbd63 [2022-11-23 14:22:54,719 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data/883f98ece/2e7b30facf0c44318a10b129e7d5da7d [2022-11-23 14:22:54,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:22:54,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:22:54,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:54,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:22:54,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:22:54,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:54" (1/1) ... [2022-11-23 14:22:54,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7ba211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:54, skipping insertion in model container [2022-11-23 14:22:54,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:54" (1/1) ... [2022-11-23 14:22:54,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:22:54,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:22:54,993 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-23 14:22:55,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:55,180 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:22:55,192 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-23 14:22:55,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:55,278 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:22:55,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55 WrapperNode [2022-11-23 14:22:55,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:55,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:55,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:22:55,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:22:55,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,373 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 436 [2022-11-23 14:22:55,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:55,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:22:55,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:22:55,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:22:55,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:22:55,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:22:55,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:22:55,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:22:55,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (1/1) ... [2022-11-23 14:22:55,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:55,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:22:55,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:22:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:22:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:22:55,699 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:22:55,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:22:56,735 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:22:56,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:22:56,764 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:22:56,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:56 BoogieIcfgContainer [2022-11-23 14:22:56,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:22:56,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:22:56,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:22:56,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:22:56,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:54" (1/3) ... [2022-11-23 14:22:56,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65301de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:56, skipping insertion in model container [2022-11-23 14:22:56,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:55" (2/3) ... [2022-11-23 14:22:56,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65301de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:56, skipping insertion in model container [2022-11-23 14:22:56,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:56" (3/3) ... [2022-11-23 14:22:56,782 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-23 14:22:56,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:22:56,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:22:56,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:22:56,872 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;@41078787, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:22:56,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:22:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:22:56,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:56,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:22:56,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 14:22:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:56,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720556288] [2022-11-23 14:22:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:22:57,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:22:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:22:57,410 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:22:57,415 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:22:57,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:22:57,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:22:57,425 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:22:57,430 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:22:57,470 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 14:22:57,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:22:57 BoogieIcfgContainer [2022-11-23 14:22:57,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:22:57,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:22:57,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:22:57,490 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:22:57,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:56" (3/4) ... [2022-11-23 14:22:57,497 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:22:57,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:22:57,500 INFO L158 Benchmark]: Toolchain (without parser) took 2775.68ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 128.5MB in the beginning and 168.9MB in the end (delta: -40.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:22:57,500 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:22:57,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.82ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 109.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 14:22:57,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.30ms. Allocated memory is still 174.1MB. Free memory was 109.3MB in the beginning and 105.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:22:57,503 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 174.1MB. Free memory was 105.1MB in the beginning and 102.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:22:57,508 INFO L158 Benchmark]: RCFGBuilder took 1352.74ms. Allocated memory is still 174.1MB. Free memory was 102.6MB in the beginning and 74.9MB in the end (delta: 27.7MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2022-11-23 14:22:57,509 INFO L158 Benchmark]: TraceAbstraction took 717.10ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 73.8MB in the beginning and 168.9MB in the end (delta: -95.0MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-11-23 14:22:57,510 INFO L158 Benchmark]: Witness Printer took 9.04ms. Allocated memory is still 209.7MB. Free memory was 168.9MB in the beginning and 168.9MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:22:57,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.82ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 109.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.30ms. Allocated memory is still 174.1MB. Free memory was 109.3MB in the beginning and 105.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 174.1MB. Free memory was 105.1MB in the beginning and 102.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1352.74ms. Allocated memory is still 174.1MB. Free memory was 102.6MB in the beginning and 74.9MB in the end (delta: 27.7MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * TraceAbstraction took 717.10ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 73.8MB in the beginning and 168.9MB in the end (delta: -95.0MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Witness Printer took 9.04ms. Allocated memory is still 209.7MB. Free memory was 168.9MB in the beginning and 168.9MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 156, overapproximation of bitwiseOr at line 165, overapproximation of bitwiseAnd at line 150. 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_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 4); [L35] const SORT_32 msb_SORT_32 = (SORT_32)1 << (4 - 1); [L37] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 10); [L38] const SORT_68 msb_SORT_68 = (SORT_68)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 1; [L42] const SORT_1 var_22 = 1; [L43] const SORT_68 var_69 = 0; [L44] const SORT_10 var_119 = 104; [L46] SORT_1 input_2; [L47] SORT_3 input_4; [L48] SORT_1 input_5; [L49] SORT_1 input_6; [L50] SORT_1 input_30; [L51] SORT_32 input_33; [L52] SORT_1 input_35; [L53] SORT_32 input_37; [L54] SORT_1 input_39; [L55] SORT_1 input_45; [L56] SORT_1 input_47; [L57] SORT_1 input_49; [L58] SORT_3 input_53; [L59] SORT_1 input_56; [L60] SORT_1 input_66; [L61] SORT_1 input_74; [L62] SORT_1 input_80; [L63] SORT_1 input_81; [L64] SORT_1 input_95; [L65] SORT_1 input_101; [L66] SORT_1 input_107; [L67] SORT_1 input_113; [L68] SORT_1 input_114; [L69] SORT_1 input_115; [L70] SORT_1 input_132; [L71] SORT_68 input_139; [L72] SORT_1 input_147; [L73] SORT_1 input_148; [L74] SORT_1 input_149; [L76] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_68 state_70 = __VERIFIER_nondet_ushort() & mask_SORT_68; [L88] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 init_9_arg_1 = var_7; [L91] state_8 = init_9_arg_1 [L92] SORT_1 init_16_arg_1 = var_7; [L93] state_15 = init_16_arg_1 [L94] SORT_1 init_27_arg_1 = var_7; [L95] state_26 = init_27_arg_1 [L96] SORT_1 init_29_arg_1 = var_7; [L97] state_28 = init_29_arg_1 [L98] SORT_1 init_42_arg_1 = var_7; [L99] state_41 = init_42_arg_1 [L100] SORT_1 init_44_arg_1 = var_7; [L101] state_43 = init_44_arg_1 [L102] SORT_1 init_52_arg_1 = var_22; [L103] state_51 = init_52_arg_1 [L104] SORT_1 init_59_arg_1 = var_7; [L105] state_58 = init_59_arg_1 [L106] SORT_1 init_61_arg_1 = var_7; [L107] state_60 = init_61_arg_1 [L108] SORT_1 init_63_arg_1 = var_7; [L109] state_62 = init_63_arg_1 [L110] SORT_1 init_65_arg_1 = var_7; [L111] state_64 = init_65_arg_1 [L112] SORT_68 init_71_arg_1 = var_69; [L113] state_70 = init_71_arg_1 [L114] SORT_1 init_73_arg_1 = var_7; [L115] state_72 = init_73_arg_1 VAL [init_16_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_52_arg_1=1, init_59_arg_1=0, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_71_arg_1=0, init_73_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_32=15, mask_SORT_68=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_32=8, msb_SORT_68=512, state_15=0, state_26=0, state_28=0, state_41=0, state_43=0, state_51=1, state_58=0, state_60=0, state_62=0, state_64=0, state_70=0, state_72=0, state_8=0, var_119=104, var_12=1, var_22=1, var_69=0, var_7=0] [L118] input_2 = __VERIFIER_nondet_uchar() [L119] input_4 = __VERIFIER_nondet_uchar() [L120] input_5 = __VERIFIER_nondet_uchar() [L121] input_6 = __VERIFIER_nondet_uchar() [L122] input_30 = __VERIFIER_nondet_uchar() [L123] input_33 = __VERIFIER_nondet_uchar() [L124] input_35 = __VERIFIER_nondet_uchar() [L125] input_37 = __VERIFIER_nondet_uchar() [L126] input_39 = __VERIFIER_nondet_uchar() [L127] input_45 = __VERIFIER_nondet_uchar() [L128] input_47 = __VERIFIER_nondet_uchar() [L129] input_49 = __VERIFIER_nondet_uchar() [L130] input_53 = __VERIFIER_nondet_uchar() [L131] input_56 = __VERIFIER_nondet_uchar() [L132] input_66 = __VERIFIER_nondet_uchar() [L133] input_74 = __VERIFIER_nondet_uchar() [L134] input_80 = __VERIFIER_nondet_uchar() [L135] input_81 = __VERIFIER_nondet_uchar() [L136] input_95 = __VERIFIER_nondet_uchar() [L137] input_101 = __VERIFIER_nondet_uchar() [L138] input_107 = __VERIFIER_nondet_uchar() [L139] input_113 = __VERIFIER_nondet_uchar() [L140] input_114 = __VERIFIER_nondet_uchar() [L141] input_115 = __VERIFIER_nondet_uchar() [L142] input_132 = __VERIFIER_nondet_uchar() [L143] input_139 = __VERIFIER_nondet_ushort() [L144] input_147 = __VERIFIER_nondet_uchar() [L145] input_148 = __VERIFIER_nondet_uchar() [L146] input_149 = __VERIFIER_nondet_uchar() [L149] SORT_1 var_11_arg_0 = state_8; [L150] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L151] SORT_10 var_11 = var_11_arg_0; [L152] SORT_10 var_13_arg_0 = var_11; [L153] SORT_10 var_13_arg_1 = var_12; [L154] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L155] SORT_1 var_14_arg_0 = var_13; [L156] SORT_1 var_14 = ~var_14_arg_0; [L157] SORT_1 var_17_arg_0 = state_15; [L158] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L159] SORT_10 var_17 = var_17_arg_0; [L160] SORT_10 var_18_arg_0 = var_17; [L161] SORT_10 var_18_arg_1 = var_12; [L162] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L163] SORT_1 var_19_arg_0 = var_14; [L164] SORT_1 var_19_arg_1 = var_18; [L165] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L166] SORT_1 var_23_arg_0 = var_19; [L167] SORT_1 var_23 = ~var_23_arg_0; [L168] SORT_1 var_24_arg_0 = var_22; [L169] SORT_1 var_24_arg_1 = var_23; [L170] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L171] var_24 = var_24 & mask_SORT_1 [L172] SORT_1 bad_25_arg_0 = var_24; [L173] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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 [2022-11-23 14:22:57,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:23:00,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:23:00,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:23:00,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:23:00,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:23:00,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:23:00,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:23:00,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:23:00,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:23:00,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:23:00,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:23:00,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:23:00,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:23:00,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:23:00,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:23:00,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:23:00,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:23:00,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:23:00,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:23:00,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:23:00,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:23:00,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:23:00,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:23:00,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:23:00,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:23:00,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:23:00,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:23:00,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:23:00,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:23:00,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:23:00,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:23:00,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:23:00,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:23:00,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:23:00,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:23:00,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:23:00,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:23:00,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:23:00,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:23:00,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:23:00,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:23:00,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 14:23:00,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:23:00,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:23:00,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:23:00,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:23:00,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:23:00,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:23:00,222 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:23:00,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:23:00,222 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:23:00,223 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:23:00,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:23:00,224 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:23:00,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:23:00,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:23:00,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:23:00,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:23:00,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:23:00,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:23:00,226 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:23:00,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:23:00,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:23:00,227 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:23:00,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:23:00,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:23:00,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:23:00,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:23:00,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:23:00,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:23:00,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:23:00,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:23:00,229 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:23:00,229 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:23:00,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:23:00,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:23:00,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:23:00,230 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_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 [2022-11-23 14:23:00,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:23:00,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:23:00,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:23:00,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:23:00,611 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:23:00,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-23 14:23:03,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:23:03,998 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:23:04,001 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-23 14:23:04,019 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data/284007859/1fbd33f9d0264604afd3f7dfe7471dd3/FLAGdd05f4e8b [2022-11-23 14:23:04,039 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/data/284007859/1fbd33f9d0264604afd3f7dfe7471dd3 [2022-11-23 14:23:04,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:23:04,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:23:04,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:23:04,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:23:04,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:23:04,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b57ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04, skipping insertion in model container [2022-11-23 14:23:04,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:23:04,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:23:04,309 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-23 14:23:04,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:23:04,440 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:23:04,451 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-23 14:23:04,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:23:04,546 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:23:04,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04 WrapperNode [2022-11-23 14:23:04,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:23:04,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:23:04,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:23:04,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:23:04,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,639 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 436 [2022-11-23 14:23:04,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:23:04,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:23:04,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:23:04,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:23:04,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:23:04,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:23:04,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:23:04,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:23:04,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (1/1) ... [2022-11-23 14:23:04,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:23:04,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:04,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:23:04,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:23:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:23:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:23:04,921 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:23:04,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:23:05,397 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:23:05,403 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:23:05,403 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:23:05,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:05 BoogieIcfgContainer [2022-11-23 14:23:05,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:23:05,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:23:05,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:23:05,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:23:05,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:23:04" (1/3) ... [2022-11-23 14:23:05,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c557114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:05, skipping insertion in model container [2022-11-23 14:23:05,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:04" (2/3) ... [2022-11-23 14:23:05,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c557114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:05, skipping insertion in model container [2022-11-23 14:23:05,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:05" (3/3) ... [2022-11-23 14:23:05,421 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-23 14:23:05,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:23:05,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:23:05,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:23:05,512 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;@44df642f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:23:05,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:23:05,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:23:05,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:05,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:23:05,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 14:23:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:23:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497865148] [2022-11-23 14:23:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:05,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:23:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:23:05,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:23:05,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:23:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:05,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 14:23:05,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:06,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:23:06,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:23:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497865148] [2022-11-23 14:23:06,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497865148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:06,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:06,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:06,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647666595] [2022-11-23 14:23:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:06,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:23:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:06,077 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:06,173 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 14:23:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:23:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:23:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:06,183 INFO L225 Difference]: With dead ends: 20 [2022-11-23 14:23:06,184 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 14:23:06,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:23:06,201 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:06,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:23:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 14:23:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 14:23:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 14:23:06,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 14:23:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:06,236 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 14:23:06,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 14:23:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:23:06,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:06,237 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:06,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:06,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:23:06,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:06,445 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 14:23:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:23:06,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599248844] [2022-11-23 14:23:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:06,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:23:06,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:23:06,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:23:06,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:23:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:06,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 14:23:06,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:06,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:07,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:23:07,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599248844] [2022-11-23 14:23:07,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599248844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:07,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2092595266] [2022-11-23 14:23:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:07,386 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:23:07,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:23:07,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:23:07,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 14:23:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:07,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 14:23:07,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:07,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:08,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2092595266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:08,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093250873] [2022-11-23 14:23:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:08,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:08,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:08,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:23:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:08,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-23 14:23:08,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:08,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:09,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093250873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:09,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:23:09,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-23 14:23:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434963000] [2022-11-23 14:23:09,036 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:23:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:23:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:09,038 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:09,217 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 14:23:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:23:09,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 14:23:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:09,218 INFO L225 Difference]: With dead ends: 16 [2022-11-23 14:23:09,218 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 14:23:09,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:23:09,220 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:09,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:23:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 14:23:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 14:23:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 14:23:09,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 14:23:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:09,225 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 14:23:09,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 14:23:09,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:23:09,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:09,227 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 14:23:09,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:09,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:09,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:23:09,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 14:23:09,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:23:09,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720769939] [2022-11-23 14:23:09,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:23:09,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:23:09,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:23:09,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:23:09,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:23:10,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:23:10,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:10,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-23 14:23:10,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:10,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:14,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:23:14,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720769939] [2022-11-23 14:23:14,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720769939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:14,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [109777754] [2022-11-23 14:23:14,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:23:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:23:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:23:14,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:23:14,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 14:23:14,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:23:14,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:14,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-23 14:23:14,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:15,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:17,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [109777754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36649593] [2022-11-23 14:23:17,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:23:17,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:17,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:23:17,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:23:17,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:17,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-23 14:23:17,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:17,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:20,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36649593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:20,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:23:20,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 12 [2022-11-23 14:23:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633691584] [2022-11-23 14:23:20,631 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:23:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:23:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:23:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:23:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:23:20,633 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:20,919 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-23 14:23:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 14:23:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:20,920 INFO L225 Difference]: With dead ends: 22 [2022-11-23 14:23:20,920 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 14:23:20,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:23:20,922 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:20,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:23:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 14:23:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 14:23:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 14:23:20,938 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-11-23 14:23:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:20,938 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 14:23:20,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 14:23:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:23:20,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:20,940 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 14:23:20,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:21,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:21,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:21,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:21,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-23 14:23:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:23:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975970373] [2022-11-23 14:23:21,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:23:21,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:23:21,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:23:21,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:23:21,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 14:23:22,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 14:23:22,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:22,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-23 14:23:22,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:24,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:31,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:23:31,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975970373] [2022-11-23 14:23:31,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975970373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:31,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [94507936] [2022-11-23 14:23:31,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:23:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:23:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:23:31,251 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:23:31,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 14:23:32,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 14:23:32,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:32,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 158 conjunts are in the unsatisfiable core [2022-11-23 14:23:32,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:34,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:43,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [94507936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:43,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715813382] [2022-11-23 14:23:43,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:23:43,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:43,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:43,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:43,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:23:43,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 14:23:43,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:43,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 181 conjunts are in the unsatisfiable core [2022-11-23 14:23:43,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:44,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:24:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:39,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715813382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:24:39,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:24:39,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 8, 8] total 35 [2022-11-23 14:24:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790991099] [2022-11-23 14:24:39,355 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:24:39,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:24:39,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:24:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:24:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:24:39,357 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:39,591 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-23 14:24:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:24:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 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 17 [2022-11-23 14:24:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:39,592 INFO L225 Difference]: With dead ends: 18 [2022-11-23 14:24:39,592 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:24:39,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:24:39,594 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:39,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:24:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:24:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:24:39,595 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) [2022-11-23 14:24:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:24:39,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-23 14:24:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:39,596 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:24:39,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:24:39,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:24:39,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:24:39,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:39,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:40,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:40,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:24:40,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:24:40,303 INFO L895 garLoopResultBuilder]: At program point L116-2(lines 116 420) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~var_22~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_60~0#1|) (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_64~0#1|) (= |ULTIMATE.start_main_~var_12~0#1| (_ bv1 32)) (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_28~0#1|) (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_58~0#1|) (= (_ bv0 8) |ULTIMATE.start_main_~state_58~0#1|) (= |ULTIMATE.start_main_~state_58~0#1| |ULTIMATE.start_main_~state_43~0#1|) (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_41~0#1|) (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_7~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~state_51~0#1|)) [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point L116-3(lines 116 420) no Hoare annotation was computed. [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-23 14:24:40,303 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-23 14:24:40,304 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-23 14:24:40,304 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-23 14:24:40,304 INFO L895 garLoopResultBuilder]: At program point L421(lines 22 422) the Hoare annotation is: false [2022-11-23 14:24:40,306 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 14:24:40,308 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:24:40,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:24:40 BoogieIcfgContainer [2022-11-23 14:24:40,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:24:40,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:24:40,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:24:40,331 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:24:40,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:05" (3/4) ... [2022-11-23 14:24:40,337 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:24:40,355 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 14:24:40,356 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 14:24:40,356 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:24:40,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:24:40,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:24:40,427 INFO L158 Benchmark]: Toolchain (without parser) took 96381.57ms. Allocated memory was 81.8MB in the beginning and 654.3MB in the end (delta: 572.5MB). Free memory was 58.7MB in the beginning and 387.0MB in the end (delta: -328.3MB). Peak memory consumption was 245.7MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,427 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:24:40,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.71ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 59.6MB in the end (delta: -1.1MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.93ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 56.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,428 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 81.8MB. Free memory was 56.1MB in the beginning and 53.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,428 INFO L158 Benchmark]: RCFGBuilder took 725.72ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 53.4MB in the beginning and 56.4MB in the end (delta: -3.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,429 INFO L158 Benchmark]: TraceAbstraction took 94923.01ms. Allocated memory was 102.8MB in the beginning and 654.3MB in the end (delta: 551.6MB). Free memory was 55.8MB in the beginning and 394.4MB in the end (delta: -338.6MB). Peak memory consumption was 211.3MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,429 INFO L158 Benchmark]: Witness Printer took 95.45ms. Allocated memory is still 654.3MB. Free memory was 394.4MB in the beginning and 387.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:24:40,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.71ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 59.6MB in the end (delta: -1.1MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.93ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 56.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 81.8MB. Free memory was 56.1MB in the beginning and 53.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 725.72ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 53.4MB in the beginning and 56.4MB in the end (delta: -3.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 94923.01ms. Allocated memory was 102.8MB in the beginning and 654.3MB in the end (delta: 551.6MB). Free memory was 55.8MB in the beginning and 394.4MB in the end (delta: -338.6MB). Peak memory consumption was 211.3MB. Max. memory is 16.1GB. * Witness Printer took 95.45ms. Allocated memory is still 654.3MB. Free memory was 394.4MB in the beginning and 387.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. 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: 94.8s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 15 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 134 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 38 HoareAnnotationTreeSize, 2 FomulaSimplifications, 85 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 87.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 202 ConstructedInterpolants, 80 QuantifiedInterpolants, 10810 SizeOfPredicates, 822 NumberOfNonLiveVariables, 6923 ConjunctsInSsa, 812 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/210 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: 116]: Loop Invariant Derived loop invariant: ((((((((((1bv8 == var_22 && 1bv8 == mask_SORT_1) && var_7 == state_60) && var_7 == state_64) && var_12 == 1bv32) && var_7 == state_28) && var_7 == state_58) && 0bv8 == state_58) && state_58 == state_43) && var_7 == state_41) && state_8 == var_7) && 1bv8 == state_51 RESULT: Ultimate proved your program to be correct! [2022-11-23 14:24:40,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff71e14-4441-4c9b-9254-3ada53bbe69f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE