./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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_bc715789-64cc-422c-bd29-d9d53aafb686/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 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e --- 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 06:50:05,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:50:05,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:50:05,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:50:05,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:50:05,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:50:05,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:50:05,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:50:05,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:50:05,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:50:05,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:50:05,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:50:05,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:50:05,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:50:05,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:50:05,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:50:05,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:50:05,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:50:05,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:50:05,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:50:05,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:50:05,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:50:05,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:50:05,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:50:05,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:50:05,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:50:05,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:50:05,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:50:05,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:50:05,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:50:05,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:50:05,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:50:05,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:50:05,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:50:05,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:50:05,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:50:05,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:50:05,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:50:05,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:50:05,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:50:05,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:50:05,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:50:05,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:50:05,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:50:05,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:50:05,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:50:05,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:50:05,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:50:05,703 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:50:05,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:50:05,704 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:50:05,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:50:05,705 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:50:05,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:50:05,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:50:05,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:50:05,705 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:50:05,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:50:05,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:50:05,706 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:50:05,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:50:05,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:50:05,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:50:05,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:50:05,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:50:05,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:50:05,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:50:05,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:50:05,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:50:05,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:50:05,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:50:05,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:05,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:50:05,710 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:50:05,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:50:05,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:50:05,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:50:05,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:50:05,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:50:05,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:50:05,712 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_bc715789-64cc-422c-bd29-d9d53aafb686/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e [2022-11-19 06:50:05,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:50:05,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:50:05,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:50:05,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:50:05,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:50:05,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-19 06:50:06,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/7ebc53391/13061b2df6b240d6baf5da220e0036fe/FLAG633f47444 [2022-11-19 06:50:06,649 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:50:06,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-19 06:50:06,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/7ebc53391/13061b2df6b240d6baf5da220e0036fe/FLAG633f47444 [2022-11-19 06:50:06,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/7ebc53391/13061b2df6b240d6baf5da220e0036fe [2022-11-19 06:50:06,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:50:06,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:50:06,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:06,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:50:06,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:50:06,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:06" (1/1) ... [2022-11-19 06:50:06,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433648fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:06, skipping insertion in model container [2022-11-19 06:50:06,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:06" (1/1) ... [2022-11-19 06:50:06,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:50:07,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:50:07,265 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_bc715789-64cc-422c-bd29-d9d53aafb686/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-19 06:50:07,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:07,496 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:50:07,506 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_bc715789-64cc-422c-bd29-d9d53aafb686/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-19 06:50:07,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:07,645 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:50:07,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07 WrapperNode [2022-11-19 06:50:07,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:07,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:07,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:50:07,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:50:07,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,815 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1186 [2022-11-19 06:50:07,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:07,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:50:07,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:50:07,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:50:07,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:50:07,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:50:07,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:50:07,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:50:07,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (1/1) ... [2022-11-19 06:50:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:07,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:50:08,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:50:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:50:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:50:08,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:50:08,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:50:12,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:50:14,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:50:14,815 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:50:14,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:14 BoogieIcfgContainer [2022-11-19 06:50:14,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:50:14,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:50:14,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:50:14,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:50:14,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:50:06" (1/3) ... [2022-11-19 06:50:14,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:14, skipping insertion in model container [2022-11-19 06:50:14,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:07" (2/3) ... [2022-11-19 06:50:14,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:14, skipping insertion in model container [2022-11-19 06:50:14,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:14" (3/3) ... [2022-11-19 06:50:14,827 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2022-11-19 06:50:14,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:50:14,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:50:14,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:50:14,897 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;@656487b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:50:14,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:50:14,902 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 06:50:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:50:14,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:14,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:50:14,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:50:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash 10052092, now seen corresponding path program 1 times [2022-11-19 06:50:14,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:14,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219294015] [2022-11-19 06:50:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:50:15,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:50:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:50:15,389 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:50:15,391 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:50:15,392 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:50:15,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:50:15,399 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:50:15,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:50:15,442 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 06:50:15,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:50:15 BoogieIcfgContainer [2022-11-19 06:50:15,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:50:15,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:50:15,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:50:15,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:50:15,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:14" (3/4) ... [2022-11-19 06:50:15,470 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:50:15,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:50:15,473 INFO L158 Benchmark]: Toolchain (without parser) took 8515.96ms. Allocated memory was 132.1MB in the beginning and 463.5MB in the end (delta: 331.4MB). Free memory was 96.0MB in the beginning and 362.7MB in the end (delta: -266.7MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2022-11-19 06:50:15,474 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.9MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:15,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.80ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 83.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:50:15,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 168.00ms. Allocated memory is still 132.1MB. Free memory was 83.3MB in the beginning and 72.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:50:15,482 INFO L158 Benchmark]: Boogie Preprocessor took 148.26ms. Allocated memory is still 132.1MB. Free memory was 72.8MB in the beginning and 67.9MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:50:15,483 INFO L158 Benchmark]: RCFGBuilder took 6853.59ms. Allocated memory was 132.1MB in the beginning and 463.5MB in the end (delta: 331.4MB). Free memory was 67.9MB in the beginning and 399.4MB in the end (delta: -331.6MB). Peak memory consumption was 254.5MB. Max. memory is 16.1GB. [2022-11-19 06:50:15,484 INFO L158 Benchmark]: TraceAbstraction took 643.37ms. Allocated memory is still 463.5MB. Free memory was 398.4MB in the beginning and 362.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-19 06:50:15,485 INFO L158 Benchmark]: Witness Printer took 6.10ms. Allocated memory is still 463.5MB. Free memory is still 362.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:15,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.9MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.80ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 83.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 168.00ms. Allocated memory is still 132.1MB. Free memory was 83.3MB in the beginning and 72.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 148.26ms. Allocated memory is still 132.1MB. Free memory was 72.8MB in the beginning and 67.9MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 6853.59ms. Allocated memory was 132.1MB in the beginning and 463.5MB in the end (delta: 331.4MB). Free memory was 67.9MB in the beginning and 399.4MB in the end (delta: -331.6MB). Peak memory consumption was 254.5MB. Max. memory is 16.1GB. * TraceAbstraction took 643.37ms. Allocated memory is still 463.5MB. Free memory was 398.4MB in the beginning and 362.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 6.10ms. Allocated memory is still 463.5MB. Free memory is still 362.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 173, overapproximation of bitwiseAnd at line 109. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L31] const SORT_242 mask_SORT_242 = (SORT_242)-1 >> (sizeof(SORT_242) * 8 - 2); [L32] const SORT_242 msb_SORT_242 = (SORT_242)1 << (2 - 1); [L34] const SORT_5 var_6 = 0; [L35] const SORT_1 var_11 = 0; [L36] const SORT_5 var_13 = 5; [L37] const SORT_1 var_15 = 1; [L38] const SORT_5 var_33 = 7; [L39] const SORT_5 var_39 = 1; [L40] const SORT_5 var_46 = 2; [L41] const SORT_5 var_60 = 3; [L42] const SORT_5 var_70 = 4; [L43] const SORT_5 var_199 = 6; [L45] SORT_1 input_2; [L46] SORT_1 input_3; [L47] SORT_1 input_4; [L48] SORT_5 input_32; [L49] SORT_1 input_43; [L50] SORT_5 input_79; [L51] SORT_5 input_80; [L52] SORT_5 input_81; [L53] SORT_5 input_82; [L54] SORT_5 input_83; [L55] SORT_5 input_84; [L56] SORT_5 input_85; [L57] SORT_5 input_86; [L58] SORT_5 input_87; [L59] SORT_5 input_97; [L60] SORT_5 input_112; [L61] SORT_5 input_113; [L62] SORT_5 input_129; [L63] SORT_5 input_130; [L64] SORT_5 input_146; [L65] SORT_5 input_147; [L66] SORT_5 input_163; [L67] SORT_5 input_164; [L68] SORT_5 input_180; [L69] SORT_5 input_181; [L70] SORT_5 input_197; [L71] SORT_5 input_198; [L72] SORT_5 input_217; [L73] SORT_1 input_259; [L74] SORT_1 input_265; [L75] SORT_1 input_266; [L76] SORT_1 input_268; [L77] SORT_1 input_277; [L78] SORT_1 input_278; [L79] SORT_1 input_279; [L80] SORT_1 input_287; [L81] SORT_1 input_297; [L82] SORT_1 input_303; [L83] SORT_1 input_304; [L84] SORT_1 input_306; [L85] SORT_1 input_315; [L86] SORT_1 input_316; [L87] SORT_1 input_317; [L88] SORT_1 input_325; [L90] SORT_5 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L91] SORT_5 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L92] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_5 init_8_arg_1 = var_6; [L97] state_7 = init_8_arg_1 [L98] SORT_5 init_10_arg_1 = var_6; [L99] state_9 = init_10_arg_1 [L100] SORT_1 init_26_arg_1 = var_15; [L101] state_25 = init_26_arg_1 [L102] SORT_1 init_28_arg_1 = var_15; [L103] state_27 = init_28_arg_1 VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=2, state_7=0, state_9=0, var_11=0, var_13=5, var_15=1, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L106] input_2 = __VERIFIER_nondet_uchar() [L107] input_3 = __VERIFIER_nondet_uchar() [L108] input_4 = __VERIFIER_nondet_uchar() [L109] input_4 = input_4 & mask_SORT_1 [L110] input_32 = __VERIFIER_nondet_uchar() [L111] input_43 = __VERIFIER_nondet_uchar() [L112] input_79 = __VERIFIER_nondet_uchar() [L113] input_80 = __VERIFIER_nondet_uchar() [L114] input_81 = __VERIFIER_nondet_uchar() [L115] input_82 = __VERIFIER_nondet_uchar() [L116] input_83 = __VERIFIER_nondet_uchar() [L117] input_84 = __VERIFIER_nondet_uchar() [L118] input_85 = __VERIFIER_nondet_uchar() [L119] input_86 = __VERIFIER_nondet_uchar() [L120] input_87 = __VERIFIER_nondet_uchar() [L121] input_97 = __VERIFIER_nondet_uchar() [L122] input_112 = __VERIFIER_nondet_uchar() [L123] input_113 = __VERIFIER_nondet_uchar() [L124] input_129 = __VERIFIER_nondet_uchar() [L125] input_130 = __VERIFIER_nondet_uchar() [L126] input_146 = __VERIFIER_nondet_uchar() [L127] input_147 = __VERIFIER_nondet_uchar() [L128] input_163 = __VERIFIER_nondet_uchar() [L129] input_164 = __VERIFIER_nondet_uchar() [L130] input_180 = __VERIFIER_nondet_uchar() [L131] input_181 = __VERIFIER_nondet_uchar() [L132] input_197 = __VERIFIER_nondet_uchar() [L133] input_198 = __VERIFIER_nondet_uchar() [L134] input_217 = __VERIFIER_nondet_uchar() [L135] input_259 = __VERIFIER_nondet_uchar() [L136] input_265 = __VERIFIER_nondet_uchar() [L137] input_266 = __VERIFIER_nondet_uchar() [L138] input_268 = __VERIFIER_nondet_uchar() [L139] input_277 = __VERIFIER_nondet_uchar() [L140] input_278 = __VERIFIER_nondet_uchar() [L141] input_279 = __VERIFIER_nondet_uchar() [L142] input_287 = __VERIFIER_nondet_uchar() [L143] input_297 = __VERIFIER_nondet_uchar() [L144] input_303 = __VERIFIER_nondet_uchar() [L145] input_304 = __VERIFIER_nondet_uchar() [L146] input_306 = __VERIFIER_nondet_uchar() [L147] input_315 = __VERIFIER_nondet_uchar() [L148] input_316 = __VERIFIER_nondet_uchar() [L149] input_317 = __VERIFIER_nondet_uchar() [L150] input_325 = __VERIFIER_nondet_uchar() [L153] SORT_1 var_12_arg_0 = var_11; [L154] SORT_5 var_12_arg_1 = state_9; [L155] SORT_5 var_12_arg_2 = state_7; [L156] SORT_5 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L157] var_12 = var_12 & mask_SORT_5 [L158] SORT_5 var_14_arg_0 = var_12; [L159] SORT_5 var_14_arg_1 = var_13; [L160] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L161] SORT_1 var_16_arg_0 = var_15; [L162] SORT_5 var_16_arg_1 = state_9; [L163] SORT_5 var_16_arg_2 = state_7; [L164] SORT_5 var_16 = var_16_arg_0 ? var_16_arg_1 : var_16_arg_2; [L165] var_16 = var_16 & mask_SORT_5 [L166] SORT_5 var_17_arg_0 = var_16; [L167] SORT_5 var_17_arg_1 = var_13; [L168] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L169] SORT_1 var_18_arg_0 = var_14; [L170] SORT_1 var_18_arg_1 = var_17; [L171] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L172] SORT_1 var_19_arg_0 = var_18; [L173] SORT_1 var_19 = ~var_19_arg_0; [L174] SORT_1 var_22_arg_0 = var_19; [L175] SORT_1 var_22 = ~var_22_arg_0; [L176] SORT_1 var_23_arg_0 = var_15; [L177] SORT_1 var_23_arg_1 = var_22; [L178] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L179] var_23 = var_23 & mask_SORT_1 [L180] SORT_1 bad_24_arg_0 = var_23; [L181] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 06:50:15,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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_bc715789-64cc-422c-bd29-d9d53aafb686/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 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e --- 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 06:50:17,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:50:17,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:50:17,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:50:17,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:50:17,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:50:17,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:50:17,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:50:17,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:50:17,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:50:17,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:50:17,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:50:17,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:50:17,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:50:17,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:50:17,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:50:17,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:50:17,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:50:17,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:50:17,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:50:17,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:50:17,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:50:17,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:50:17,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:50:17,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:50:17,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:50:17,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:50:17,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:50:17,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:50:17,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:50:17,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:50:17,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:50:17,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:50:17,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:50:17,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:50:17,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:50:17,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:50:17,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:50:17,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:50:17,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:50:17,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:50:17,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:50:17,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:50:17,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:50:17,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:50:17,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:50:17,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:50:17,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:50:17,899 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:50:17,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:50:17,899 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:50:17,899 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:50:17,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:50:17,901 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:50:17,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:50:17,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:50:17,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:50:17,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:50:17,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:50:17,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:50:17,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:50:17,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:50:17,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:50:17,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:50:17,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:50:17,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:50:17,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:50:17,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:50:17,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:17,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:50:17,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:50:17,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:50:17,906 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:50:17,906 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:50:17,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:50:17,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:50:17,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:50:17,907 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_bc715789-64cc-422c-bd29-d9d53aafb686/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e [2022-11-19 06:50:18,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:50:18,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:50:18,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:50:18,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:50:18,286 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:50:18,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-19 06:50:18,358 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/1ebebf0e2/ad1d5e1a3c534a33a9386059a4f1f06c/FLAG811c092dc [2022-11-19 06:50:19,033 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:50:19,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-19 06:50:19,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/1ebebf0e2/ad1d5e1a3c534a33a9386059a4f1f06c/FLAG811c092dc [2022-11-19 06:50:19,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/data/1ebebf0e2/ad1d5e1a3c534a33a9386059a4f1f06c [2022-11-19 06:50:19,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:50:19,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:50:19,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:19,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:50:19,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:50:19,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:19" (1/1) ... [2022-11-19 06:50:19,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ee1b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:19, skipping insertion in model container [2022-11-19 06:50:19,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:19" (1/1) ... [2022-11-19 06:50:19,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:50:19,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:50:19,593 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_bc715789-64cc-422c-bd29-d9d53aafb686/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-19 06:50:19,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:19,879 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:50:19,890 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_bc715789-64cc-422c-bd29-d9d53aafb686/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-19 06:50:20,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:20,049 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:50:20,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20 WrapperNode [2022-11-19 06:50:20,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:20,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:20,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:50:20,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:50:20,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,188 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1032 [2022-11-19 06:50:20,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:20,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:50:20,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:50:20,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:50:20,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:50:20,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:50:20,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:50:20,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:50:20,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (1/1) ... [2022-11-19 06:50:20,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:20,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:20,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:50:20,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:50:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:50:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:50:20,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:50:20,792 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:50:22,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:50:22,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:50:22,122 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:50:22,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:22 BoogieIcfgContainer [2022-11-19 06:50:22,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:50:22,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:50:22,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:50:22,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:50:22,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:50:19" (1/3) ... [2022-11-19 06:50:22,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a340f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:22, skipping insertion in model container [2022-11-19 06:50:22,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:20" (2/3) ... [2022-11-19 06:50:22,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a340f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:22, skipping insertion in model container [2022-11-19 06:50:22,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:22" (3/3) ... [2022-11-19 06:50:22,135 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2022-11-19 06:50:22,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:50:22,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:50:22,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:50:22,243 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;@24ba5643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:50:22,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:50:22,249 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 06:50:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:50:22,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:22,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:50:22,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:50:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 06:50:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:50:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105460650] [2022-11-19 06:50:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:22,280 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 06:50:22,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:50:22,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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 06:50:22,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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 06:50:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:22,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:50:22,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:22,759 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 06:50:22,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:22,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:50:22,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105460650] [2022-11-19 06:50:22,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105460650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:22,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:22,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:50:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480119766] [2022-11-19 06:50:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:22,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:50:22,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:50:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:50:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:50:22,815 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 06:50:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:23,087 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 06:50:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:50:23,090 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 06:50:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:23,099 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:50:23,099 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 06:50:23,103 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 06:50:23,107 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 06:50:23,108 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 06:50:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 06:50:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 06:50:23,145 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 06:50:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 06:50:23,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 06:50:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:23,148 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 06:50:23,148 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 06:50:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 06:50:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:50:23,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:23,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:23,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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 06:50:23,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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 06:50:23,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:50:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 06:50:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:50:23,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246313418] [2022-11-19 06:50:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:23,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:50:23,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:50:23,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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 06:50:23,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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 06:50:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:24,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-19 06:50:24,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:25,751 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 06:50:25,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:16,483 WARN L233 SmtUtils]: Spent 2.81m on a formula simplification. DAG size of input: 213 DAG size of output: 199 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:17,656 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 06:53:17,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:53:17,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246313418] [2022-11-19 06:53:17,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246313418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:17,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1727217492] [2022-11-19 06:53:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:53:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:53:17,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:53:17,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 06:53:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:18,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-19 06:53:18,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:19,267 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 06:53:19,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:31,157 WARN L233 SmtUtils]: Spent 5.11m on a formula simplification. DAG size of input: 213 DAG size of output: 195 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:56,028 WARN L233 SmtUtils]: Spent 3.27m on a formula simplification. DAG size of input: 195 DAG size of output: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:56,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1727217492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:56,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342598770] [2022-11-19 07:01:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:56,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:56,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:56,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:01:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:56,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-19 07:01:56,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:59,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:29,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-11-19 07:02:29,583 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-19 07:02:29,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-19 07:02:29,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-19 07:02:29,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 6] total 11 [2022-11-19 07:02:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81642809] [2022-11-19 07:02:29,588 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:02:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:02:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:02:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=141, Unknown=6, NotChecked=0, Total=210 [2022-11-19 07:02:29,591 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:02:29,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 686.6s TimeCoverageRelationStatistics Valid=63, Invalid=141, Unknown=6, NotChecked=0, Total=210 [2022-11-19 07:02:29,596 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:29,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-11-19 07:02:29,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:29,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 07:02:30,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:30,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:30,199 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 36 more [2022-11-19 07:02:30,203 INFO L158 Benchmark]: Toolchain (without parser) took 730835.02ms. Allocated memory was 71.3MB in the beginning and 180.4MB in the end (delta: 109.1MB). Free memory was 52.8MB in the beginning and 130.3MB in the end (delta: -77.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2022-11-19 07:02:30,203 INFO L158 Benchmark]: CDTParser took 0.78ms. Allocated memory is still 71.3MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:02:30,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.36ms. Allocated memory is still 71.3MB. Free memory was 52.5MB in the beginning and 30.4MB in the end (delta: 22.1MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-19 07:02:30,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 135.52ms. Allocated memory is still 71.3MB. Free memory was 30.4MB in the beginning and 46.5MB in the end (delta: -16.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-11-19 07:02:30,205 INFO L158 Benchmark]: Boogie Preprocessor took 125.08ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 41.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:02:30,205 INFO L158 Benchmark]: RCFGBuilder took 1807.27ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 41.5MB in the beginning and 32.9MB in the end (delta: 8.6MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2022-11-19 07:02:30,206 INFO L158 Benchmark]: TraceAbstraction took 728074.50ms. Allocated memory was 90.2MB in the beginning and 180.4MB in the end (delta: 90.2MB). Free memory was 32.3MB in the beginning and 130.3MB in the end (delta: -98.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:02:30,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78ms. Allocated memory is still 71.3MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.36ms. Allocated memory is still 71.3MB. Free memory was 52.5MB in the beginning and 30.4MB in the end (delta: 22.1MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 135.52ms. Allocated memory is still 71.3MB. Free memory was 30.4MB in the beginning and 46.5MB in the end (delta: -16.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.08ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 41.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1807.27ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 41.5MB in the beginning and 32.9MB in the end (delta: 8.6MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * TraceAbstraction took 728074.50ms. Allocated memory was 90.2MB in the beginning and 180.4MB in the end (delta: 90.2MB). Free memory was 32.3MB in the beginning and 130.3MB in the end (delta: -98.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc715789-64cc-422c-bd29-d9d53aafb686/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken