./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 112587b26a8a60bef67dc0385ac410c4904ba752e01ffbab2b33ce42a4e58bd4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:37:15,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:37:15,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:37:15,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:37:15,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:37:15,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:37:15,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:37:15,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:37:15,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:37:15,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:37:15,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:37:15,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:37:15,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:37:15,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:37:15,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:37:15,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:37:15,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:37:15,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:37:15,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:37:15,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:37:15,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:37:15,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:37:15,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:37:15,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:37:15,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:37:15,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:37:15,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:37:15,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:37:15,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:37:15,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:37:15,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:37:15,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:37:15,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:37:15,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:37:15,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:37:15,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:37:15,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:37:15,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:37:15,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:37:15,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:37:15,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:37:16,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:37:16,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:37:16,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:37:16,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:37:16,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:37:16,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:37:16,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:37:16,045 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:37:16,045 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:37:16,046 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:37:16,046 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:37:16,047 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:37:16,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:37:16,048 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:37:16,048 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:37:16,048 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:37:16,049 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:37:16,049 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:37:16,049 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:37:16,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:37:16,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:37:16,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:37:16,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:37:16,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:37:16,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:37:16,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:37:16,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:37:16,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:37:16,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:37:16,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:37:16,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:37:16,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:37:16,055 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:37:16,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:37:16,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:37:16,056 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:37:16,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:37:16,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:37:16,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:37:16,057 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_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112587b26a8a60bef67dc0385ac410c4904ba752e01ffbab2b33ce42a4e58bd4 [2022-11-19 07:37:16,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:37:16,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:37:16,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:37:16,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:37:16,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:37:16,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c [2022-11-19 07:37:16,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/c4314e58a/6766bb115d5c407c97587d82ccaa4b2c/FLAG77fd12f6b [2022-11-19 07:37:16,946 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:37:16,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c [2022-11-19 07:37:16,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/c4314e58a/6766bb115d5c407c97587d82ccaa4b2c/FLAG77fd12f6b [2022-11-19 07:37:17,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/c4314e58a/6766bb115d5c407c97587d82ccaa4b2c [2022-11-19 07:37:17,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:37:17,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:37:17,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:37:17,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:37:17,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:37:17,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:17,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67dbe7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17, skipping insertion in model container [2022-11-19 07:37:17,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:17,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:37:17,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:37:17,609 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c[1107,1120] [2022-11-19 07:37:17,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:37:17,783 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:37:17,794 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c[1107,1120] [2022-11-19 07:37:17,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:37:17,905 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:37:17,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17 WrapperNode [2022-11-19 07:37:17,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:37:17,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:37:17,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:37:17,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:37:17,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:17,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:17,983 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 673 [2022-11-19 07:37:17,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:37:17,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:37:17,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:37:17,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:37:17,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:17,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:37:18,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:37:18,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:37:18,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:37:18,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2022-11-19 07:37:18,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:37:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:37:18,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:37:18,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:37:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:37:18,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:37:18,351 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:37:18,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:37:24,104 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:37:24,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:37:24,915 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:37:24,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:24 BoogieIcfgContainer [2022-11-19 07:37:24,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:37:24,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:37:24,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:37:24,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:37:24,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:17" (1/3) ... [2022-11-19 07:37:24,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c210a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:24, skipping insertion in model container [2022-11-19 07:37:24,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (2/3) ... [2022-11-19 07:37:24,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c210a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:24, skipping insertion in model container [2022-11-19 07:37:24,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:24" (3/3) ... [2022-11-19 07:37:24,926 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_2.c [2022-11-19 07:37:24,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:37:24,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:37:25,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:37:25,020 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;@42e74415, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:37:25,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:37:25,025 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) [2022-11-19 07:37:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:37:25,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:25,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:37:25,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash 4080247, now seen corresponding path program 1 times [2022-11-19 07:37:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:37:25,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409905582] [2022-11-19 07:37:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:37:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:37:25,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:37:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:37:25,381 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:37:25,387 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:37:25,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:37:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:37:25,395 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:37:25,399 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:37:25,424 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:37:25,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:37:25 BoogieIcfgContainer [2022-11-19 07:37:25,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:37:25,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:37:25,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:37:25,436 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:37:25,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:24" (3/4) ... [2022-11-19 07:37:25,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:37:25,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:37:25,443 INFO L158 Benchmark]: Toolchain (without parser) took 8154.10ms. Allocated memory was 113.2MB in the beginning and 352.3MB in the end (delta: 239.1MB). Free memory was 68.4MB in the beginning and 283.1MB in the end (delta: -214.8MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-19 07:37:25,444 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:37:25,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.39ms. Allocated memory is still 113.2MB. Free memory was 68.1MB in the beginning and 72.7MB in the end (delta: -4.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-19 07:37:25,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.94ms. Allocated memory is still 113.2MB. Free memory was 72.7MB in the beginning and 65.2MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:37:25,447 INFO L158 Benchmark]: Boogie Preprocessor took 50.90ms. Allocated memory is still 113.2MB. Free memory was 65.2MB in the beginning and 61.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:37:25,452 INFO L158 Benchmark]: RCFGBuilder took 6882.76ms. Allocated memory was 113.2MB in the beginning and 352.3MB in the end (delta: 239.1MB). Free memory was 61.0MB in the beginning and 308.3MB in the end (delta: -247.3MB). Peak memory consumption was 196.1MB. Max. memory is 16.1GB. [2022-11-19 07:37:25,453 INFO L158 Benchmark]: TraceAbstraction took 514.24ms. Allocated memory is still 352.3MB. Free memory was 308.3MB in the beginning and 283.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-19 07:37:25,454 INFO L158 Benchmark]: Witness Printer took 5.79ms. Allocated memory is still 352.3MB. Free memory is still 283.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:37:25,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.39ms. Allocated memory is still 113.2MB. Free memory was 68.1MB in the beginning and 72.7MB in the end (delta: -4.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.94ms. Allocated memory is still 113.2MB. Free memory was 72.7MB in the beginning and 65.2MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.90ms. Allocated memory is still 113.2MB. Free memory was 65.2MB in the beginning and 61.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 6882.76ms. Allocated memory was 113.2MB in the beginning and 352.3MB in the end (delta: 239.1MB). Free memory was 61.0MB in the beginning and 308.3MB in the end (delta: -247.3MB). Peak memory consumption was 196.1MB. Max. memory is 16.1GB. * TraceAbstraction took 514.24ms. Allocated memory is still 352.3MB. Free memory was 308.3MB in the beginning and 283.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.79ms. Allocated memory is still 352.3MB. Free memory is still 283.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 81, overapproximation of bitwiseAnd at line 86. 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_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 8); [L29] const SORT_13 msb_SORT_13 = (SORT_13)1 << (8 - 1); [L31] const SORT_1 var_3 = 0; [L32] const SORT_1 var_9 = 1; [L34] SORT_1 input_2; [L36] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L37] SORT_13 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_13; [L38] SORT_13 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_13; [L39] SORT_1 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_13 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_13; [L49] SORT_13 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_13; [L50] SORT_13 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_13; [L51] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 init_5_arg_1 = var_3; [L54] state_4 = init_5_arg_1 [L55] SORT_1 init_17_arg_1 = var_9; [L56] state_16 = init_17_arg_1 [L57] SORT_1 init_19_arg_1 = var_3; [L58] state_18 = init_19_arg_1 [L59] SORT_1 init_21_arg_1 = var_3; [L60] state_20 = init_21_arg_1 [L61] SORT_1 init_23_arg_1 = var_3; [L62] state_22 = init_23_arg_1 [L63] SORT_1 init_25_arg_1 = var_3; [L64] state_24 = init_25_arg_1 [L65] SORT_1 init_27_arg_1 = var_3; [L66] state_26 = init_27_arg_1 [L67] SORT_1 init_29_arg_1 = var_3; [L68] state_28 = init_29_arg_1 [L69] SORT_1 init_31_arg_1 = var_3; [L70] state_30 = init_31_arg_1 [L71] SORT_1 init_33_arg_1 = var_9; [L72] state_32 = init_33_arg_1 [L73] SORT_1 init_39_arg_1 = var_3; [L74] state_38 = init_39_arg_1 VAL [init_17_arg_1=1, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=1, init_39_arg_1=0, init_5_arg_1=0, mask_SORT_1=1, mask_SORT_13=255, msb_SORT_1=1, msb_SORT_13=128, state_14=0, state_15=0, state_16=1, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=1, state_34=4, state_35=0, state_36=0, state_38=0, state_4=0, var_3=0, var_9=1] [L77] input_2 = __VERIFIER_nondet_uchar() [L80] SORT_1 var_6_arg_0 = state_4; [L81] SORT_1 var_6 = ~var_6_arg_0; [L82] SORT_1 var_10_arg_0 = var_6; [L83] SORT_1 var_10 = ~var_10_arg_0; [L84] SORT_1 var_11_arg_0 = var_9; [L85] SORT_1 var_11_arg_1 = var_10; [L86] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L87] var_11 = var_11 & mask_SORT_1 [L88] SORT_1 bad_12_arg_0 = var_11; [L89] CALL __VERIFIER_assert(!(bad_12_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:37:25,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 112587b26a8a60bef67dc0385ac410c4904ba752e01ffbab2b33ce42a4e58bd4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:37:27,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:37:27,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:37:27,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:37:27,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:37:27,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:37:27,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:37:27,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:37:27,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:37:27,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:37:27,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:37:27,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:37:27,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:37:27,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:37:27,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:37:27,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:37:27,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:37:27,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:37:27,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:37:27,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:37:27,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:37:27,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:37:27,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:37:27,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:37:27,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:37:27,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:37:27,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:37:27,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:37:27,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:37:27,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:37:27,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:37:27,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:37:27,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:37:27,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:37:27,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:37:27,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:37:27,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:37:27,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:37:27,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:37:27,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:37:27,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:37:27,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:37:27,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:37:27,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:37:27,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:37:27,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:37:27,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:37:27,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:37:27,931 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:37:27,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:37:27,931 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:37:27,931 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:37:27,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:37:27,933 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:37:27,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:37:27,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:37:27,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:37:27,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:37:27,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:37:27,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:37:27,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:37:27,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:37:27,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:37:27,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:37:27,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:37:27,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:37:27,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:37:27,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:37:27,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:37:27,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:37:27,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:37:27,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:37:27,938 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:37:27,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:37:27,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:37:27,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:37:27,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:37:27,940 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_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112587b26a8a60bef67dc0385ac410c4904ba752e01ffbab2b33ce42a4e58bd4 [2022-11-19 07:37:28,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:37:28,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:37:28,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:37:28,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:37:28,393 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:37:28,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c [2022-11-19 07:37:28,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/24cd0ffed/f7e57ecab36b4470826406f1dbfb16df/FLAGe21927678 [2022-11-19 07:37:29,065 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:37:29,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c [2022-11-19 07:37:29,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/24cd0ffed/f7e57ecab36b4470826406f1dbfb16df/FLAGe21927678 [2022-11-19 07:37:29,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/data/24cd0ffed/f7e57ecab36b4470826406f1dbfb16df [2022-11-19 07:37:29,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:37:29,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:37:29,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:37:29,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:37:29,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:37:29,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:29,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa17cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29, skipping insertion in model container [2022-11-19 07:37:29,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:29,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:37:29,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:37:29,588 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c[1107,1120] [2022-11-19 07:37:29,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:37:29,791 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:37:29,802 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c[1107,1120] [2022-11-19 07:37:29,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:37:29,902 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:37:29,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29 WrapperNode [2022-11-19 07:37:29,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:37:29,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:37:29,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:37:29,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:37:29,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:29,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:29,985 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 631 [2022-11-19 07:37:29,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:37:29,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:37:29,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:37:29,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:37:29,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:29,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:37:30,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:37:30,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:37:30,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:37:30,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (1/1) ... [2022-11-19 07:37:30,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:37:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:37:30,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:37:30,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:37:30,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:37:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:37:30,453 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:37:30,455 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:37:31,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:37:31,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:37:31,252 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:37:31,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:31 BoogieIcfgContainer [2022-11-19 07:37:31,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:37:31,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:37:31,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:37:31,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:37:31,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:29" (1/3) ... [2022-11-19 07:37:31,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd657f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:31, skipping insertion in model container [2022-11-19 07:37:31,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:29" (2/3) ... [2022-11-19 07:37:31,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd657f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:31, skipping insertion in model container [2022-11-19 07:37:31,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:31" (3/3) ... [2022-11-19 07:37:31,263 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_2.c [2022-11-19 07:37:31,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:37:31,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:37:31,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:37:31,336 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;@5e4773fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:37:31,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:37:31,340 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) [2022-11-19 07:37:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:37:31,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:31,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:37:31,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:37:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:37:31,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372140701] [2022-11-19 07:37:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:31,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:37:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:37:31,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:37:31,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:37:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:31,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:37:31,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:31,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:37:31,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:37:31,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372140701] [2022-11-19 07:37:31,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372140701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:37:31,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:37:31,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:37:31,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068283844] [2022-11-19 07:37:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:37:31,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:37:31,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:37:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:37:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:37:31,833 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) [2022-11-19 07:37:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:37:31,961 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:37:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:37:31,963 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 [2022-11-19 07:37:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:37:31,978 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:37:31,978 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:37:31,981 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 [2022-11-19 07:37:31,984 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 [2022-11-19 07:37:31,985 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] [2022-11-19 07:37:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:37:32,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:37:32,014 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) [2022-11-19 07:37:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:37:32,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:37:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:37:32,017 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:37:32,017 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) [2022-11-19 07:37:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:37:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:37:32,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:32,018 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:37:32,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:32,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:37:32,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:32,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:32,230 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:37:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:37:32,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660404843] [2022-11-19 07:37:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:32,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:37:32,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:37:32,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:37:32,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:37:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:32,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 07:37:32,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:32,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:33,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:37:33,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660404843] [2022-11-19 07:37:33,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660404843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:33,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2143525377] [2022-11-19 07:37:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:33,156 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:37:33,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:37:33,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:37:33,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:37:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:33,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 07:37:33,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:33,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:34,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2143525377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:34,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733144523] [2022-11-19 07:37:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:34,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:37:34,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:37:34,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:37:34,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:37:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:34,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 07:37:34,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:34,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:34,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733144523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:34,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:37:34,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-19 07:37:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674408468] [2022-11-19 07:37:34,713 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:37:34,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:37:34,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:37:34,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:37:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:37:34,715 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) [2022-11-19 07:37:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:37:34,892 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:37:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:37:34,893 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 [2022-11-19 07:37:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:37:34,894 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:37:34,894 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:37:34,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:37:34,896 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:37:34,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-11-19 07:37:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:37:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:37:34,900 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) [2022-11-19 07:37:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:37:34,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:37:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:37:34,901 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:37:34,901 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) [2022-11-19 07:37:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:37:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:37:34,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:34,902 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:37:34,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:35,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:35,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:37:35,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:37:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:37:35,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637981708] [2022-11-19 07:37:35,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:37:35,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:37:35,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:37:35,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:37:35,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:37:36,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:37:36,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:37:36,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 07:37:36,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:36,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:36,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:37:36,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637981708] [2022-11-19 07:37:36,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637981708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:36,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032918729] [2022-11-19 07:37:36,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:37:36,585 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:37:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:37:36,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:37:36,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:37:37,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:37:37,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:37:37,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-19 07:37:37,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:38,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:39,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032918729] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:39,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343431971] [2022-11-19 07:37:39,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:37:39,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:37:39,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:37:39,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:37:39,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:37:39,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:37:39,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:37:39,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-19 07:37:39,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:40,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:54,604 WARN L233 SmtUtils]: Spent 13.18s on a formula simplification. DAG size of input: 220 DAG size of output: 218 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:55,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343431971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:55,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:37:55,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 24 [2022-11-19 07:37:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374612940] [2022-11-19 07:37:55,096 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:37:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:37:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:37:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:37:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:37:55,098 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:37:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:37:55,517 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-19 07:37:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:37:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:37:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:37:55,518 INFO L225 Difference]: With dead ends: 19 [2022-11-19 07:37:55,519 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 07:37:55,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2022-11-19 07:37:55,520 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:37:55,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-19 07:37:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 07:37:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-19 07:37:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:37:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 07:37:55,526 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 07:37:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:37:55,526 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 07:37:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:37:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 07:37:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:37:55,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:55,528 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 07:37:55,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:55,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:55,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:56,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:37:56,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 07:37:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:37:56,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263960671] [2022-11-19 07:37:56,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:37:56,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:37:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:37:56,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:37:56,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:37:56,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:37:56,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:37:56,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 240 conjunts are in the unsatisfiable core [2022-11-19 07:37:56,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:38:28,532 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 400 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:38:29,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:38:45,888 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 480 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:05,923 WARN L233 SmtUtils]: Spent 13.48s on a formula simplification that was a NOOP. DAG size: 685 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:07,340 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:39:07,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263960671] [2022-11-19 07:39:07,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263960671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:39:07,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [368816686] [2022-11-19 07:39:07,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:39:07,341 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:39:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:39:07,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:39:07,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:39:08,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:39:08,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:39:08,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 304 conjunts are in the unsatisfiable core [2022-11-19 07:39:08,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:39:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:11,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:39:31,986 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 474 DAG size of output: 432 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:15,004 WARN L233 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 847 DAG size of output: 814 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:41:15,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [368816686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:41:15,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853241149] [2022-11-19 07:41:15,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:41:15,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:41:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:41:15,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:41:15,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:41:16,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:41:16,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:41:16,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-19 07:41:16,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:41:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:41:20,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:41:52,896 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 210 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:41:53,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853241149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:41:53,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:41:53,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 30 [2022-11-19 07:41:53,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590995142] [2022-11-19 07:41:53,006 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:41:53,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 07:41:53,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:41:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 07:41:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=740, Unknown=25, NotChecked=0, Total=870 [2022-11-19 07:41:53,008 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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) [2022-11-19 07:42:15,157 WARN L233 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 381 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:23,970 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-19 07:42:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:42:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:42:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:23,972 INFO L225 Difference]: With dead ends: 22 [2022-11-19 07:42:23,972 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 07:42:23,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 253.2s TimeCoverageRelationStatistics Valid=259, Invalid=1121, Unknown=26, NotChecked=0, Total=1406 [2022-11-19 07:42:23,974 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:23,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 61 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 73 Unchecked, 0.1s Time] [2022-11-19 07:42:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 07:42:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-19 07:42:23,986 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) [2022-11-19 07:42:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 07:42:23,987 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-19 07:42:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:23,987 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 07:42:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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) [2022-11-19 07:42:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 07:42:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:42:23,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:23,988 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-19 07:42:23,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:42:24,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:42:24,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:42:24,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:42:24,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-19 07:42:24,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:42:24,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99931693] [2022-11-19 07:42:24,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:42:24,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:42:24,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:42:24,593 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:42:24,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:42:25,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:42:25,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:42:25,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 290 conjunts are in the unsatisfiable core [2022-11-19 07:42:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:26,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:36,858 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 304 DAG size of output: 298 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:10,844 WARN L233 SmtUtils]: Spent 24.75s on a formula simplification. DAG size of input: 755 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:43:11,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:43:11,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99931693] [2022-11-19 07:43:11,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99931693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:43:11,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [572987557] [2022-11-19 07:43:11,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:43:11,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:43:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:43:11,122 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:43:11,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:43:12,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:43:12,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:43:12,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 289 conjunts are in the unsatisfiable core [2022-11-19 07:43:12,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:43:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:43:14,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:44:02,479 WARN L233 SmtUtils]: Spent 17.53s on a formula simplification. DAG size of input: 633 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:44:02,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [572987557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:44:02,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730324124] [2022-11-19 07:44:02,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:44:02,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:02,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:44:02,721 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:44:02,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:44:03,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:44:03,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:44:03,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 328 conjunts are in the unsatisfiable core [2022-11-19 07:44:03,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:44:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:44:07,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:44:56,231 WARN L233 SmtUtils]: Spent 14.55s on a formula simplification. DAG size of input: 381 DAG size of output: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:17,111 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 309 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:14,262 WARN L233 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 797 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:29,244 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730324124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:29,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:47:29,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 13, 15] total 37 [2022-11-19 07:47:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058362975] [2022-11-19 07:47:29,524 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:47:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 07:47:29,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:47:29,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 07:47:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=983, Unknown=37, NotChecked=0, Total=1332 [2022-11-19 07:47:29,528 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 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) [2022-11-19 07:47:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:31,172 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-19 07:47:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:47:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 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 [2022-11-19 07:47:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:31,173 INFO L225 Difference]: With dead ends: 24 [2022-11-19 07:47:31,173 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 07:47:31,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 278.6s TimeCoverageRelationStatistics Valid=397, Invalid=1206, Unknown=37, NotChecked=0, Total=1640 [2022-11-19 07:47:31,175 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:31,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-11-19 07:47:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 07:47:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-11-19 07:47:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-19 07:47:31,191 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-19 07:47:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:31,191 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-19 07:47:31,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 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) [2022-11-19 07:47:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-19 07:47:31,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:47:31,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:31,195 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-19 07:47:31,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:31,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-19 07:47:31,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:31,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:31,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:47:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-19 07:47:31,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:47:31,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984314321] [2022-11-19 07:47:31,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 07:47:31,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:47:31,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:47:31,819 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:47:31,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 07:47:32,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-19 07:47:32,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:32,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 321 conjunts are in the unsatisfiable core [2022-11-19 07:47:32,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:36,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:51,080 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 213 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:30,598 WARN L233 SmtUtils]: Spent 33.27s on a formula simplification. DAG size of input: 472 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:09,858 WARN L233 SmtUtils]: Spent 26.60s on a formula simplification. DAG size of input: 358 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:12,181 WARN L233 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 787 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:31,559 WARN L233 SmtUtils]: Spent 16.48s on a formula simplification that was a NOOP. DAG size: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:59,267 WARN L233 SmtUtils]: Spent 23.89s on a formula simplification. DAG size of input: 537 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:59,295 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:59,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984314321] [2022-11-19 07:51:59,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984314321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:51:59,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802297349] [2022-11-19 07:51:59,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 07:51:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:51:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:51:59,297 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:51:59,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4457df-c46c-4c4b-b23f-8ce6410ed9be/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-19 07:52:01,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-19 07:52:01,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:52:01,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 812 conjunts are in the unsatisfiable core [2022-11-19 07:52:01,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:17,690 INFO L328 TraceCheckSpWp]: Computing backward predicates...