./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 --- 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 06:37:44,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:37:44,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:37:44,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:37:44,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:37:44,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:37:44,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:37:44,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:37:44,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:37:44,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:37:44,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:37:44,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:37:44,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:37:44,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:37:44,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:37:44,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:37:44,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:37:44,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:37:44,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:37:44,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:37:44,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:37:44,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:37:44,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:37:44,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:37:44,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:37:44,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:37:44,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:37:45,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:37:45,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:37:45,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:37:45,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:37:45,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:37:45,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:37:45,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:37:45,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:37:45,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:37:45,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:37:45,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:37:45,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:37:45,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:37:45,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:37:45,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:37:45,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:37:45,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:37:45,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:37:45,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:37:45,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:37:45,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:37:45,069 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:37:45,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:37:45,069 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:37:45,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:37:45,070 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:37:45,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:37:45,070 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:37:45,070 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:37:45,073 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:37:45,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:37:45,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:37:45,074 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:37:45,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:37:45,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:37:45,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:37:45,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:37:45,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:37:45,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:37:45,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:37:45,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:37:45,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:37:45,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:37:45,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:37:45,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:45,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:37:45,080 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:37:45,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:37:45,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:37:45,080 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:37:45,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:37:45,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:37:45,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:37:45,082 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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 [2022-11-19 06:37:45,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:37:45,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:37:45,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:37:45,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:37:45,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:37:45,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-19 06:37:45,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/14be7090c/9fd0b9c7ac4b485c8cd1f35be6c019c1/FLAG484d5b1e1 [2022-11-19 06:37:46,168 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:37:46,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-19 06:37:46,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/14be7090c/9fd0b9c7ac4b485c8cd1f35be6c019c1/FLAG484d5b1e1 [2022-11-19 06:37:46,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/14be7090c/9fd0b9c7ac4b485c8cd1f35be6c019c1 [2022-11-19 06:37:46,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:37:46,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:37:46,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:46,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:37:46,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:37:46,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:46" (1/1) ... [2022-11-19 06:37:46,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ac4113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:46, skipping insertion in model container [2022-11-19 06:37:46,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:46" (1/1) ... [2022-11-19 06:37:46,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:37:46,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:37:46,708 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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-19 06:37:46,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:46,967 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:37:46,987 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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-19 06:37:47,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:47,128 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:37:47,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47 WrapperNode [2022-11-19 06:37:47,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:47,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:47,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:37:47,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:37:47,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,301 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1553 [2022-11-19 06:37:47,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:47,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:37:47,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:37:47,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:37:47,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:37:47,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:37:47,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:37:47,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:37:47,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (1/1) ... [2022-11-19 06:37:47,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:47,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:37:47,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:37:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:37:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:37:47,985 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:37:47,988 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:37:50,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:37:51,490 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:37:51,490 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:37:51,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:51 BoogieIcfgContainer [2022-11-19 06:37:51,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:37:51,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:37:51,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:37:51,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:37:51,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:37:46" (1/3) ... [2022-11-19 06:37:51,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721077b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:51, skipping insertion in model container [2022-11-19 06:37:51,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:47" (2/3) ... [2022-11-19 06:37:51,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721077b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:51, skipping insertion in model container [2022-11-19 06:37:51,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:51" (3/3) ... [2022-11-19 06:37:51,504 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b03.c [2022-11-19 06:37:51,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:37:51,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:37:51,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:37:51,578 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;@4615d6bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:37:51,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:37:51,583 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 06:37:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:37:51,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:51,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:37:51,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 8954437, now seen corresponding path program 1 times [2022-11-19 06:37:51,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:51,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138943317] [2022-11-19 06:37:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:37:52,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:37:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:37:52,398 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:37:52,402 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:37:52,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:37:52,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:37:52,411 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:37:52,419 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:37:52,468 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 06:37:52,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:37:52 BoogieIcfgContainer [2022-11-19 06:37:52,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:37:52,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:37:52,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:37:52,499 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:37:52,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:51" (3/4) ... [2022-11-19 06:37:52,504 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:37:52,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:37:52,507 INFO L158 Benchmark]: Toolchain (without parser) took 6100.22ms. Allocated memory was 157.3MB in the beginning and 239.1MB in the end (delta: 81.8MB). Free memory was 122.9MB in the beginning and 154.1MB in the end (delta: -31.2MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-11-19 06:37:52,508 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory was 51.3MB in the beginning and 51.3MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:37:52,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.77ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 103.9MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-19 06:37:52,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 168.36ms. Allocated memory is still 157.3MB. Free memory was 102.9MB in the beginning and 92.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:37:52,516 INFO L158 Benchmark]: Boogie Preprocessor took 134.76ms. Allocated memory is still 157.3MB. Free memory was 92.5MB in the beginning and 86.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:37:52,518 INFO L158 Benchmark]: RCFGBuilder took 4055.53ms. Allocated memory was 157.3MB in the beginning and 239.1MB in the end (delta: 81.8MB). Free memory was 86.2MB in the beginning and 106.6MB in the end (delta: -20.5MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. [2022-11-19 06:37:52,519 INFO L158 Benchmark]: TraceAbstraction took 1001.10ms. Allocated memory is still 239.1MB. Free memory was 105.6MB in the beginning and 154.1MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:37:52,520 INFO L158 Benchmark]: Witness Printer took 6.54ms. Allocated memory is still 239.1MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:37:52,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory was 51.3MB in the beginning and 51.3MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.77ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 103.9MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 168.36ms. Allocated memory is still 157.3MB. Free memory was 102.9MB in the beginning and 92.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 134.76ms. Allocated memory is still 157.3MB. Free memory was 92.5MB in the beginning and 86.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 4055.53ms. Allocated memory was 157.3MB in the beginning and 239.1MB in the end (delta: 81.8MB). Free memory was 86.2MB in the beginning and 106.6MB in the end (delta: -20.5MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1001.10ms. Allocated memory is still 239.1MB. Free memory was 105.6MB in the beginning and 154.1MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.54ms. Allocated memory is still 239.1MB. Free memory is still 154.1MB. 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 bitwiseOr at line 342, overapproximation of bitwiseComplement at line 371, overapproximation of bitwiseAnd at line 329. 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 4); [L29] const SORT_7 msb_SORT_7 = (SORT_7)1 << (4 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 32); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (32 - 1); [L34] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 3); [L35] const SORT_37 msb_SORT_37 = (SORT_37)1 << (3 - 1); [L37] const SORT_67 mask_SORT_67 = (SORT_67)-1 >> (sizeof(SORT_67) * 8 - 2); [L38] const SORT_67 msb_SORT_67 = (SORT_67)1 << (2 - 1); [L40] const SORT_7 var_8 = 0; [L41] const SORT_11 var_13 = 0; [L42] const SORT_11 var_16 = 8; [L43] const SORT_11 var_20 = 4; [L44] const SORT_11 var_24 = 2; [L45] const SORT_11 var_28 = 1; [L46] const SORT_1 var_33 = 1; [L47] const SORT_37 var_38 = 0; [L48] const SORT_1 var_47 = 0; [L49] const SORT_67 var_68 = 0; [L50] const SORT_67 var_71 = 1; [L51] const SORT_37 var_81 = 7; [L52] const SORT_37 var_104 = 1; [L53] const SORT_37 var_123 = 2; [L54] const SORT_37 var_138 = 4; [L55] const SORT_67 var_154 = 2; [L56] const SORT_7 var_394 = 8; [L57] const SORT_7 var_397 = 4; [L58] const SORT_7 var_400 = 2; [L59] const SORT_7 var_401 = 1; [L61] SORT_1 input_2; [L62] SORT_1 input_3; [L63] SORT_1 input_4; [L64] SORT_1 input_5; [L65] SORT_1 input_6; [L66] SORT_37 input_75; [L67] SORT_37 input_76; [L68] SORT_37 input_77; [L69] SORT_37 input_78; [L70] SORT_37 input_79; [L71] SORT_37 input_80; [L72] SORT_37 input_85; [L73] SORT_37 input_87; [L74] SORT_37 input_89; [L75] SORT_37 input_94; [L76] SORT_37 input_96; [L77] SORT_37 input_98; [L78] SORT_37 input_102; [L79] SORT_37 input_103; [L80] SORT_37 input_108; [L81] SORT_37 input_110; [L82] SORT_37 input_115; [L83] SORT_37 input_117; [L84] SORT_37 input_121; [L85] SORT_37 input_122; [L86] SORT_37 input_127; [L87] SORT_37 input_132; [L88] SORT_37 input_136; [L89] SORT_37 input_137; [L90] SORT_37 input_149; [L91] SORT_37 input_160; [L92] SORT_37 input_161; [L93] SORT_37 input_162; [L94] SORT_37 input_163; [L95] SORT_37 input_164; [L96] SORT_37 input_165; [L97] SORT_37 input_168; [L98] SORT_37 input_170; [L99] SORT_37 input_172; [L100] SORT_37 input_177; [L101] SORT_37 input_179; [L102] SORT_37 input_181; [L103] SORT_37 input_185; [L104] SORT_37 input_186; [L105] SORT_37 input_189; [L106] SORT_37 input_191; [L107] SORT_37 input_196; [L108] SORT_37 input_198; [L109] SORT_37 input_202; [L110] SORT_37 input_203; [L111] SORT_37 input_206; [L112] SORT_37 input_211; [L113] SORT_37 input_215; [L114] SORT_37 input_216; [L115] SORT_37 input_226; [L116] SORT_37 input_233; [L117] SORT_37 input_234; [L118] SORT_37 input_235; [L119] SORT_37 input_236; [L120] SORT_37 input_237; [L121] SORT_37 input_238; [L122] SORT_37 input_241; [L123] SORT_37 input_243; [L124] SORT_37 input_245; [L125] SORT_37 input_250; [L126] SORT_37 input_252; [L127] SORT_37 input_254; [L128] SORT_37 input_258; [L129] SORT_37 input_259; [L130] SORT_37 input_262; [L131] SORT_37 input_264; [L132] SORT_37 input_269; [L133] SORT_37 input_271; [L134] SORT_37 input_275; [L135] SORT_37 input_276; [L136] SORT_37 input_279; [L137] SORT_37 input_284; [L138] SORT_37 input_288; [L139] SORT_37 input_289; [L140] SORT_37 input_299; [L141] SORT_37 input_306; [L142] SORT_37 input_307; [L143] SORT_37 input_308; [L144] SORT_37 input_309; [L145] SORT_37 input_310; [L146] SORT_37 input_311; [L147] SORT_37 input_314; [L148] SORT_37 input_316; [L149] SORT_37 input_318; [L150] SORT_37 input_323; [L151] SORT_37 input_325; [L152] SORT_37 input_327; [L153] SORT_37 input_331; [L154] SORT_37 input_332; [L155] SORT_37 input_335; [L156] SORT_37 input_337; [L157] SORT_37 input_342; [L158] SORT_37 input_344; [L159] SORT_37 input_348; [L160] SORT_37 input_349; [L161] SORT_37 input_352; [L162] SORT_37 input_357; [L163] SORT_37 input_361; [L164] SORT_37 input_362; [L165] SORT_37 input_372; [L166] SORT_7 input_391; [L167] SORT_7 input_392; [L168] SORT_7 input_393; [L170] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L171] SORT_37 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L172] SORT_37 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L173] SORT_37 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L174] SORT_37 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L175] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L176] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L177] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L178] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L179] SORT_7 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L180] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L181] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L182] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L183] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L184] SORT_67 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_67; [L186] SORT_7 init_10_arg_1 = var_8; [L187] state_9 = init_10_arg_1 [L188] SORT_37 init_40_arg_1 = var_38; [L189] state_39 = init_40_arg_1 [L190] SORT_37 init_42_arg_1 = var_38; [L191] state_41 = init_42_arg_1 [L192] SORT_37 init_44_arg_1 = var_38; [L193] state_43 = init_44_arg_1 [L194] SORT_37 init_46_arg_1 = var_38; [L195] state_45 = init_46_arg_1 [L196] SORT_1 init_49_arg_1 = var_47; [L197] state_48 = init_49_arg_1 [L198] SORT_1 init_51_arg_1 = var_47; [L199] state_50 = init_51_arg_1 [L200] SORT_1 init_53_arg_1 = var_47; [L201] state_52 = init_53_arg_1 [L202] SORT_1 init_55_arg_1 = var_47; [L203] state_54 = init_55_arg_1 [L204] SORT_7 init_57_arg_1 = var_8; [L205] state_56 = init_57_arg_1 [L206] SORT_1 init_60_arg_1 = var_47; [L207] state_59 = init_60_arg_1 [L208] SORT_1 init_62_arg_1 = var_47; [L209] state_61 = init_62_arg_1 [L210] SORT_1 init_64_arg_1 = var_47; [L211] state_63 = init_64_arg_1 [L212] SORT_1 init_66_arg_1 = var_47; [L213] state_65 = init_66_arg_1 [L214] SORT_67 init_70_arg_1 = var_68; [L215] state_69 = init_70_arg_1 VAL [init_10_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_37=7, mask_SORT_67=3, mask_SORT_7=15, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_37=4, msb_SORT_67=2, msb_SORT_7=8, state_39=0, state_41=0, state_43=0, state_45=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_59=0, state_61=0, state_63=0, state_65=0, state_69=0, state_9=0, var_104=1, var_123=2, var_13=0, var_138=4, var_154=2, var_16=8, var_20=4, var_24=2, var_28=1, var_33=1, var_38=0, var_394=8, var_397=4, var_400=2, var_401=1, var_47=0, var_68=0, var_71=1, var_8=0, var_81=7] [L218] input_2 = __VERIFIER_nondet_uchar() [L219] input_3 = __VERIFIER_nondet_uchar() [L220] input_4 = __VERIFIER_nondet_uchar() [L221] input_5 = __VERIFIER_nondet_uchar() [L222] input_6 = __VERIFIER_nondet_uchar() [L223] input_75 = __VERIFIER_nondet_uchar() [L224] input_76 = __VERIFIER_nondet_uchar() [L225] input_77 = __VERIFIER_nondet_uchar() [L226] input_78 = __VERIFIER_nondet_uchar() [L227] input_79 = __VERIFIER_nondet_uchar() [L228] input_80 = __VERIFIER_nondet_uchar() [L229] input_85 = __VERIFIER_nondet_uchar() [L230] input_87 = __VERIFIER_nondet_uchar() [L231] input_89 = __VERIFIER_nondet_uchar() [L232] input_94 = __VERIFIER_nondet_uchar() [L233] input_96 = __VERIFIER_nondet_uchar() [L234] input_98 = __VERIFIER_nondet_uchar() [L235] input_102 = __VERIFIER_nondet_uchar() [L236] input_103 = __VERIFIER_nondet_uchar() [L237] input_108 = __VERIFIER_nondet_uchar() [L238] input_110 = __VERIFIER_nondet_uchar() [L239] input_115 = __VERIFIER_nondet_uchar() [L240] input_117 = __VERIFIER_nondet_uchar() [L241] input_121 = __VERIFIER_nondet_uchar() [L242] input_122 = __VERIFIER_nondet_uchar() [L243] input_127 = __VERIFIER_nondet_uchar() [L244] input_132 = __VERIFIER_nondet_uchar() [L245] input_136 = __VERIFIER_nondet_uchar() [L246] input_137 = __VERIFIER_nondet_uchar() [L247] input_149 = __VERIFIER_nondet_uchar() [L248] input_160 = __VERIFIER_nondet_uchar() [L249] input_161 = __VERIFIER_nondet_uchar() [L250] input_162 = __VERIFIER_nondet_uchar() [L251] input_163 = __VERIFIER_nondet_uchar() [L252] input_164 = __VERIFIER_nondet_uchar() [L253] input_165 = __VERIFIER_nondet_uchar() [L254] input_168 = __VERIFIER_nondet_uchar() [L255] input_170 = __VERIFIER_nondet_uchar() [L256] input_172 = __VERIFIER_nondet_uchar() [L257] input_177 = __VERIFIER_nondet_uchar() [L258] input_179 = __VERIFIER_nondet_uchar() [L259] input_181 = __VERIFIER_nondet_uchar() [L260] input_185 = __VERIFIER_nondet_uchar() [L261] input_186 = __VERIFIER_nondet_uchar() [L262] input_189 = __VERIFIER_nondet_uchar() [L263] input_191 = __VERIFIER_nondet_uchar() [L264] input_196 = __VERIFIER_nondet_uchar() [L265] input_198 = __VERIFIER_nondet_uchar() [L266] input_202 = __VERIFIER_nondet_uchar() [L267] input_203 = __VERIFIER_nondet_uchar() [L268] input_206 = __VERIFIER_nondet_uchar() [L269] input_211 = __VERIFIER_nondet_uchar() [L270] input_215 = __VERIFIER_nondet_uchar() [L271] input_216 = __VERIFIER_nondet_uchar() [L272] input_226 = __VERIFIER_nondet_uchar() [L273] input_233 = __VERIFIER_nondet_uchar() [L274] input_234 = __VERIFIER_nondet_uchar() [L275] input_235 = __VERIFIER_nondet_uchar() [L276] input_236 = __VERIFIER_nondet_uchar() [L277] input_237 = __VERIFIER_nondet_uchar() [L278] input_238 = __VERIFIER_nondet_uchar() [L279] input_241 = __VERIFIER_nondet_uchar() [L280] input_243 = __VERIFIER_nondet_uchar() [L281] input_245 = __VERIFIER_nondet_uchar() [L282] input_250 = __VERIFIER_nondet_uchar() [L283] input_252 = __VERIFIER_nondet_uchar() [L284] input_254 = __VERIFIER_nondet_uchar() [L285] input_258 = __VERIFIER_nondet_uchar() [L286] input_259 = __VERIFIER_nondet_uchar() [L287] input_262 = __VERIFIER_nondet_uchar() [L288] input_264 = __VERIFIER_nondet_uchar() [L289] input_269 = __VERIFIER_nondet_uchar() [L290] input_271 = __VERIFIER_nondet_uchar() [L291] input_275 = __VERIFIER_nondet_uchar() [L292] input_276 = __VERIFIER_nondet_uchar() [L293] input_279 = __VERIFIER_nondet_uchar() [L294] input_284 = __VERIFIER_nondet_uchar() [L295] input_288 = __VERIFIER_nondet_uchar() [L296] input_289 = __VERIFIER_nondet_uchar() [L297] input_299 = __VERIFIER_nondet_uchar() [L298] input_306 = __VERIFIER_nondet_uchar() [L299] input_307 = __VERIFIER_nondet_uchar() [L300] input_308 = __VERIFIER_nondet_uchar() [L301] input_309 = __VERIFIER_nondet_uchar() [L302] input_310 = __VERIFIER_nondet_uchar() [L303] input_311 = __VERIFIER_nondet_uchar() [L304] input_314 = __VERIFIER_nondet_uchar() [L305] input_316 = __VERIFIER_nondet_uchar() [L306] input_318 = __VERIFIER_nondet_uchar() [L307] input_323 = __VERIFIER_nondet_uchar() [L308] input_325 = __VERIFIER_nondet_uchar() [L309] input_327 = __VERIFIER_nondet_uchar() [L310] input_331 = __VERIFIER_nondet_uchar() [L311] input_332 = __VERIFIER_nondet_uchar() [L312] input_335 = __VERIFIER_nondet_uchar() [L313] input_337 = __VERIFIER_nondet_uchar() [L314] input_342 = __VERIFIER_nondet_uchar() [L315] input_344 = __VERIFIER_nondet_uchar() [L316] input_348 = __VERIFIER_nondet_uchar() [L317] input_349 = __VERIFIER_nondet_uchar() [L318] input_352 = __VERIFIER_nondet_uchar() [L319] input_357 = __VERIFIER_nondet_uchar() [L320] input_361 = __VERIFIER_nondet_uchar() [L321] input_362 = __VERIFIER_nondet_uchar() [L322] input_372 = __VERIFIER_nondet_uchar() [L323] input_391 = __VERIFIER_nondet_uchar() [L324] input_392 = __VERIFIER_nondet_uchar() [L325] input_393 = __VERIFIER_nondet_uchar() [L328] SORT_7 var_12_arg_0 = state_9; [L329] var_12_arg_0 = var_12_arg_0 & mask_SORT_7 [L330] SORT_11 var_12 = var_12_arg_0; [L331] SORT_11 var_14_arg_0 = var_12; [L332] SORT_11 var_14_arg_1 = var_13; [L333] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L334] SORT_7 var_15_arg_0 = state_9; [L335] var_15_arg_0 = var_15_arg_0 & mask_SORT_7 [L336] SORT_11 var_15 = var_15_arg_0; [L337] SORT_11 var_17_arg_0 = var_15; [L338] SORT_11 var_17_arg_1 = var_16; [L339] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L340] SORT_1 var_18_arg_0 = var_14; [L341] SORT_1 var_18_arg_1 = var_17; [L342] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L343] SORT_7 var_19_arg_0 = state_9; [L344] var_19_arg_0 = var_19_arg_0 & mask_SORT_7 [L345] SORT_11 var_19 = var_19_arg_0; [L346] SORT_11 var_21_arg_0 = var_19; [L347] SORT_11 var_21_arg_1 = var_20; [L348] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L349] SORT_1 var_22_arg_0 = var_18; [L350] SORT_1 var_22_arg_1 = var_21; [L351] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L352] SORT_7 var_23_arg_0 = state_9; [L353] var_23_arg_0 = var_23_arg_0 & mask_SORT_7 [L354] SORT_11 var_23 = var_23_arg_0; [L355] SORT_11 var_25_arg_0 = var_23; [L356] SORT_11 var_25_arg_1 = var_24; [L357] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L358] SORT_1 var_26_arg_0 = var_22; [L359] SORT_1 var_26_arg_1 = var_25; [L360] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L361] SORT_7 var_27_arg_0 = state_9; [L362] var_27_arg_0 = var_27_arg_0 & mask_SORT_7 [L363] SORT_11 var_27 = var_27_arg_0; [L364] SORT_11 var_29_arg_0 = var_27; [L365] SORT_11 var_29_arg_1 = var_28; [L366] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L367] SORT_1 var_30_arg_0 = var_26; [L368] SORT_1 var_30_arg_1 = var_29; [L369] SORT_1 var_30 = var_30_arg_0 | var_30_arg_1; [L370] SORT_1 var_34_arg_0 = var_30; [L371] SORT_1 var_34 = ~var_34_arg_0; [L372] SORT_1 var_35_arg_0 = var_33; [L373] SORT_1 var_35_arg_1 = var_34; [L374] SORT_1 var_35 = var_35_arg_0 & var_35_arg_1; [L375] var_35 = var_35 & mask_SORT_1 [L376] SORT_1 bad_36_arg_0 = var_35; [L377] CALL __VERIFIER_assert(!(bad_36_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: 0.9s, 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, 0.4s 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 06:37:52,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 --- 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 06:37:54,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:37:54,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:37:54,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:37:54,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:37:54,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:37:54,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:37:54,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:37:55,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:37:55,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:37:55,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:37:55,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:37:55,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:37:55,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:37:55,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:37:55,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:37:55,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:37:55,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:37:55,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:37:55,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:37:55,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:37:55,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:37:55,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:37:55,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:37:55,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:37:55,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:37:55,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:37:55,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:37:55,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:37:55,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:37:55,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:37:55,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:37:55,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:37:55,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:37:55,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:37:55,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:37:55,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:37:55,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:37:55,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:37:55,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:37:55,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:37:55,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:37:55,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:37:55,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:37:55,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:37:55,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:37:55,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:37:55,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:37:55,119 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:37:55,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:37:55,119 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:37:55,119 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:37:55,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:37:55,121 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:37:55,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:37:55,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:37:55,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:37:55,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:37:55,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:37:55,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:37:55,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:37:55,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:37:55,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:37:55,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:37:55,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:37:55,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:37:55,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:37:55,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:37:55,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:55,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:37:55,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:37:55,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:37:55,127 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:37:55,127 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:37:55,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:37:55,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:37:55,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:37:55,128 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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 [2022-11-19 06:37:55,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:37:55,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:37:55,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:37:55,624 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:37:55,625 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:37:55,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-19 06:37:55,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/13bed1396/e82f4776096340d485eaa1364276e1c1/FLAGdd190c8ca [2022-11-19 06:37:56,375 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:37:56,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-19 06:37:56,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/13bed1396/e82f4776096340d485eaa1364276e1c1/FLAGdd190c8ca [2022-11-19 06:37:56,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/data/13bed1396/e82f4776096340d485eaa1364276e1c1 [2022-11-19 06:37:56,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:37:56,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:37:56,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:56,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:37:56,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:37:56,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:56" (1/1) ... [2022-11-19 06:37:56,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca9f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:56, skipping insertion in model container [2022-11-19 06:37:56,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:56" (1/1) ... [2022-11-19 06:37:56,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:37:56,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:37:57,048 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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-19 06:37:57,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:57,381 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:37:57,395 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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-19 06:37:57,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:57,582 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:37:57,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57 WrapperNode [2022-11-19 06:37:57,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:57,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:57,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:37:57,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:37:57,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,739 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1420 [2022-11-19 06:37:57,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:57,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:37:57,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:37:57,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:37:57,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:37:57,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:37:57,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:37:57,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:37:57,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (1/1) ... [2022-11-19 06:37:57,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:57,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:57,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:37:57,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:37:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:37:58,447 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:37:58,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:37:59,929 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:37:59,936 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:37:59,936 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:37:59,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:59 BoogieIcfgContainer [2022-11-19 06:37:59,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:37:59,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:37:59,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:37:59,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:37:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:37:56" (1/3) ... [2022-11-19 06:37:59,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9a01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:59, skipping insertion in model container [2022-11-19 06:37:59,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:57" (2/3) ... [2022-11-19 06:37:59,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9a01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:59, skipping insertion in model container [2022-11-19 06:37:59,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:59" (3/3) ... [2022-11-19 06:37:59,948 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b03.c [2022-11-19 06:37:59,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:37:59,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:38:00,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:38:00,034 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;@39ec9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:38:00,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:38:00,039 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 06:38:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:38:00,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:00,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:38:00,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:00,053 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 06:38:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:38:00,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473570599] [2022-11-19 06:38:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:00,071 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 06:38:00,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:38:00,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:00,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:00,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 06:38:00,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:00,831 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 06:38:00,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:00,832 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:38:00,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473570599] [2022-11-19 06:38:00,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473570599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:00,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:00,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:38:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795319891] [2022-11-19 06:38:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:00,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:38:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:38:00,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:38:00,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:38:00,870 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 06:38:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:01,149 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 06:38:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:38:01,152 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 06:38:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:01,158 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:38:01,159 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 06:38:01,161 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 06:38:01,167 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:01,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:38:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 06:38:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 06:38:01,206 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 06:38:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 06:38:01,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 06:38:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:01,209 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 06:38:01,209 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 06:38:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 06:38:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:38:01,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:01,210 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:01,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:01,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:01,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 06:38:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:38:01,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435602685] [2022-11-19 06:38:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:01,426 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 06:38:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:38:01,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:01,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:02,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 06:38:02,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:02,557 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 06:38:02,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:03,620 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 06:38:03,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:38:03,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435602685] [2022-11-19 06:38:03,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435602685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:03,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537213944] [2022-11-19 06:38:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:38:03,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:38:03,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:38:03,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 06:38:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:05,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-19 06:38:05,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:05,459 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 06:38:05,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:10,984 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 06:38:10,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537213944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627903730] [2022-11-19 06:38:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:10,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:10,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:10,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:11,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:38:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:11,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-19 06:38:11,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:11,830 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 06:38:11,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:12,461 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 06:38:12,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627903730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:12,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:38:12,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-11-19 06:38:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286874575] [2022-11-19 06:38:12,468 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:12,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:38:12,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:38:12,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:38:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=86, Unknown=1, NotChecked=0, Total=132 [2022-11-19 06:38:12,472 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 06:38:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:12,817 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 06:38:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:38:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 06:38:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:12,818 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:38:12,818 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:38:12,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=71, Invalid=138, Unknown=1, NotChecked=0, Total=210 [2022-11-19 06:38:12,820 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:12,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-19 06:38:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:38:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 06:38:12,824 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 06:38:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 06:38:12,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 06:38:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:12,824 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 06:38:12,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 06:38:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 06:38:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:38:12,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:12,825 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 06:38:12,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:13,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:13,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:13,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:38:13,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 06:38:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:38:13,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410380556] [2022-11-19 06:38:13,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:38:13,432 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 06:38:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:38:13,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:13,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:14,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:38:14,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:14,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-19 06:38:14,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:15,052 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 06:38:15,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:22,319 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 92 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:38:29,697 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 181 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:38:29,878 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 06:38:29,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:38:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410380556] [2022-11-19 06:38:29,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410380556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [501033776] [2022-11-19 06:38:29,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:38:29,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:38:29,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:38:29,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:38:29,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 06:38:31,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:38:31,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:32,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-19 06:38:32,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:32,529 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 06:38:32,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:37,061 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 06:38:37,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [501033776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:37,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546773840] [2022-11-19 06:38:37,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:38:37,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:37,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:37,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:38:37,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:38:37,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:37,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-19 06:38:37,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:38,191 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 06:38:38,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:42,546 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 06:38:42,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546773840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:42,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:38:42,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2022-11-19 06:38:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382869905] [2022-11-19 06:38:42,548 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:42,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:38:42,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:38:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:38:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-19 06:38:42,550 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:43,015 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-19 06:38:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:38:43,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 06:38:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:43,017 INFO L225 Difference]: With dead ends: 19 [2022-11-19 06:38:43,017 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 06:38:43,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:38:43,019 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:43,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 32 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 17 Unchecked, 0.3s Time] [2022-11-19 06:38:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 06:38:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-19 06:38:43,027 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 06:38:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 06:38:43,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 06:38:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:43,028 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 06:38:43,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 06:38:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 06:38:43,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:43,030 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 06:38:43,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:43,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:43,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:43,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:43,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 06:38:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:38:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753955568] [2022-11-19 06:38:43,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:38:43,648 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 06:38:43,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:38:43,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:43,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:38:45,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 06:38:45,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:45,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-19 06:38:45,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:46,117 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 06:38:46,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:54,300 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 06:38:54,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:38:54,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753955568] [2022-11-19 06:38:54,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753955568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1374999406] [2022-11-19 06:38:54,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:38:54,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:38:54,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:38:54,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:38:54,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 06:38:57,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 06:38:57,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:57,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 177 conjunts are in the unsatisfiable core [2022-11-19 06:38:57,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:59,176 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 06:38:59,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:21,133 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 297 DAG size of output: 253 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:39:24,811 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 06:39:24,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1374999406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:24,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003350790] [2022-11-19 06:39:24,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:39:24,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:24,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:24,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:39:26,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 06:39:26,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:26,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 220 conjunts are in the unsatisfiable core [2022-11-19 06:39:26,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:27,671 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 06:39:27,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:50,607 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 06:39:50,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003350790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:50,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:39:50,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10, 9, 9, 9] total 32 [2022-11-19 06:39:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568550443] [2022-11-19 06:39:50,608 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:39:50,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-19 06:39:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-19 06:39:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2022-11-19 06:39:50,609 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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 06:39:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:51,764 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-19 06:39:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:39:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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 06:39:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:51,766 INFO L225 Difference]: With dead ends: 22 [2022-11-19 06:39:51,766 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 06:39:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:39:51,768 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:51,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 59 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 65 Invalid, 0 Unknown, 87 Unchecked, 0.6s Time] [2022-11-19 06:39:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 06:39:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-19 06:39:51,774 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 06:39:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 06:39:51,774 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-19 06:39:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:51,775 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 06:39:51,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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 06:39:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 06:39:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 06:39:51,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:51,776 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-19 06:39:51,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:52,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:39:52,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:52,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:52,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-19 06:39:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:52,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661835761] [2022-11-19 06:39:52,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:39:52,400 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 06:39:52,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:52,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:39:52,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:39:53,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:39:53,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:53,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 4554 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-19 06:39:54,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:56,737 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 06:39:56,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:00,241 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 412 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:01,744 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 06:41:01,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661835761] [2022-11-19 06:41:01,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661835761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1989324286] [2022-11-19 06:41:01,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:41:01,745 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:41:01,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:41:01,746 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:41:01,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 06:41:05,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:41:05,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:41:05,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 4554 conjuncts, 458 conjunts are in the unsatisfiable core [2022-11-19 06:41:05,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:23,591 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 06:41:23,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:00,416 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 476 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:42:17,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-19 06:42:17,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575349979] [2022-11-19 06:42:17,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:42:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:42:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:17,190 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:42:17,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 06:42:18,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:42:18,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:42:18,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 4554 conjuncts, 216 conjunts are in the unsatisfiable core [2022-11-19 06:42:18,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:21,519 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 06:42:21,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:55,925 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 06:42:55,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575349979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:55,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-19 06:42:55,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 9] total 24 [2022-11-19 06:42:55,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644619078] [2022-11-19 06:42:55,926 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-19 06:42:55,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:42:55,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:42:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:42:55,928 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:57,491 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-19 06:42:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:42:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 06:42:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:57,492 INFO L225 Difference]: With dead ends: 25 [2022-11-19 06:42:57,493 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 06:42:57,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:42:57,494 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:57,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 54 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 65 Unchecked, 0.5s Time] [2022-11-19 06:42:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 06:42:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-19 06:42:57,501 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 06:42:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-19 06:42:57,502 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-19 06:42:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:57,502 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-19 06:42:57,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-19 06:42:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 06:42:57,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:57,504 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-19 06:42:57,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:57,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:42:57,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:58,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:42:58,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:58,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-19 06:42:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:58,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515292431] [2022-11-19 06:42:58,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:42:58,124 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 06:42:58,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:58,126 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:42:58,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:43:00,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-19 06:43:00,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:00,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 5638 conjuncts, 172 conjunts are in the unsatisfiable core [2022-11-19 06:43:00,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:43:02,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:11,961 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 06:43:11,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:43:11,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515292431] [2022-11-19 06:43:11,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515292431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:11,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [519353693] [2022-11-19 06:43:11,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:43:11,962 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:43:11,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:43:11,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:43:11,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-19 06:43:18,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-19 06:43:18,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:18,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 5638 conjuncts, 492 conjunts are in the unsatisfiable core [2022-11-19 06:43:18,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:38,688 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 06:43:38,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:31,879 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 455 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:10,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-19 06:45:10,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230051081] [2022-11-19 06:45:10,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:45:10,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:45:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:45:10,832 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:45:10,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 06:45:13,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-19 06:45:13,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:45:13,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 5638 conjuncts, 501 conjunts are in the unsatisfiable core [2022-11-19 06:45:13,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:36,872 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 06:45:36,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:58,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-19 06:46:58,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:46:58,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-11-19 06:46:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164929534] [2022-11-19 06:46:58,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:46:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 06:46:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 06:46:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 06:46:58,556 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 06:47:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:00,297 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-11-19 06:47:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:47:00,298 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-19 06:47:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:00,299 INFO L225 Difference]: With dead ends: 26 [2022-11-19 06:47:00,299 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 06:47:00,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 06:47:00,301 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:00,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 22 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 42 Unchecked, 0.4s Time] [2022-11-19 06:47:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 06:47:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 06:47:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-19 06:47:00,311 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-11-19 06:47:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:00,311 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-19 06:47:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 06:47:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-19 06:47:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 06:47:00,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:00,313 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-19 06:47:00,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-19 06:47:00,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:00,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2022-11-19 06:47:00,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:47:00,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 6 times [2022-11-19 06:47:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:47:00,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571279641] [2022-11-19 06:47:00,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-19 06:47:00,933 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 06:47:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:47:00,935 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 06:47:00,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f572c61e-2f54-4e22-80b3-9ea9808fc1a3/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 (18)] Waiting until timeout for monitored process [2022-11-19 06:47:03,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-19 06:47:03,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:03,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 5638 conjuncts, 241 conjunts are in the unsatisfiable core [2022-11-19 06:47:03,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 06:47:17,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:04,396 WARN L233 SmtUtils]: Spent 34.20s on a formula simplification. DAG size of input: 1307 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:47,927 WARN L233 SmtUtils]: Spent 31.83s on a formula simplification. DAG size of input: 776 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)