./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur --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 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 --- 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-38b53e6 [2022-11-25 23:23:02,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:23:02,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:23:02,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:23:02,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:23:02,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:23:02,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:23:02,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:23:02,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:23:02,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:23:02,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:23:02,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:23:02,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:23:02,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:23:02,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:23:02,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:23:02,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:23:02,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:23:02,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:23:02,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:23:02,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:23:02,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:23:02,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:23:02,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:23:02,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:23:02,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:23:02,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:23:02,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:23:02,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:23:02,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:23:02,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:23:02,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:23:02,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:23:02,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:23:02,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:23:02,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:23:02,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:23:02,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:23:02,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:23:02,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:23:02,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:23:02,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:23:03,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:23:03,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:23:03,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:23:03,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:23:03,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:23:03,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:23:03,008 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:23:03,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:23:03,008 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:23:03,009 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:23:03,010 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:23:03,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:23:03,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:23:03,010 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:23:03,011 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:23:03,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:23:03,011 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:23:03,011 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:23:03,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:23:03,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:23:03,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:23:03,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:23:03,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:23:03,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:23:03,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:23:03,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:23:03,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:23:03,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:23:03,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:23:03,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:03,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:23:03,015 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:23:03,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:23:03,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:23:03,016 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:23:03,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:23:03,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:23:03,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:23:03,017 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_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 [2022-11-25 23:23:03,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:23:03,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:23:03,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:23:03,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:23:03,417 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:23:03,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-25 23:23:06,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:23:07,214 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:23:07,215 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-25 23:23:07,239 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data/2a27295b7/812f70bbfb114c08a534bf8196338114/FLAG49195ac4d [2022-11-25 23:23:07,260 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data/2a27295b7/812f70bbfb114c08a534bf8196338114 [2022-11-25 23:23:07,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:23:07,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:23:07,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:23:07,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:23:07,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:23:07,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:23:07" (1/1) ... [2022-11-25 23:23:07,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2929c2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:07, skipping insertion in model container [2022-11-25 23:23:07,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:23:07" (1/1) ... [2022-11-25 23:23:07,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:23:07,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:23:07,639 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-25 23:23:08,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:23:08,083 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:23:08,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-25 23:23:08,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:23:08,450 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:23:08,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08 WrapperNode [2022-11-25 23:23:08,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:23:08,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:23:08,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:23:08,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:23:08,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,679 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2260 [2022-11-25 23:23:08,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:23:08,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:23:08,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:23:08,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:23:08,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:23:08,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:23:08,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:23:08,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:23:08,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (1/1) ... [2022-11-25 23:23:08,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:08,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:08,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:23:08,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:23:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:23:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:23:09,754 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:23:09,756 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:31:02,884 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:31:02,964 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:31:02,964 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:31:02,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:31:02 BoogieIcfgContainer [2022-11-25 23:31:02,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:31:02,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:31:02,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:31:02,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:31:02,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:23:07" (1/3) ... [2022-11-25 23:31:02,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f1e448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:31:02, skipping insertion in model container [2022-11-25 23:31:02,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:08" (2/3) ... [2022-11-25 23:31:02,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f1e448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:31:02, skipping insertion in model container [2022-11-25 23:31:02,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:31:02" (3/3) ... [2022-11-25 23:31:02,989 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-25 23:31:03,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:31:03,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:31:03,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:31:03,104 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;@4780e099, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:31:03,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:31:03,109 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) [2022-11-25 23:31:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:31:03,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:03,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:31:03,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:31:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-25 23:31:03,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:31:03,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703659171] [2022-11-25 23:31:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:31:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:31:03,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:31:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:31:03,812 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:31:03,814 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:31:03,816 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:31:03,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:31:03,824 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:31:03,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:31:03,859 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 23:31:03,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:31:03 BoogieIcfgContainer [2022-11-25 23:31:03,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:31:03,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:31:03,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:31:03,877 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:31:03,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:31:02" (3/4) ... [2022-11-25 23:31:03,881 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:31:03,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:31:03,882 INFO L158 Benchmark]: Toolchain (without parser) took 476616.49ms. Allocated memory was 142.6MB in the beginning and 899.7MB in the end (delta: 757.1MB). Free memory was 107.1MB in the beginning and 664.4MB in the end (delta: -557.3MB). Peak memory consumption was 202.3MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,883 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:31:03,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1181.71ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 106.7MB in the beginning and 150.0MB in the end (delta: -43.3MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 228.16ms. Allocated memory is still 209.7MB. Free memory was 150.0MB in the beginning and 121.7MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,885 INFO L158 Benchmark]: Boogie Preprocessor took 207.27ms. Allocated memory is still 209.7MB. Free memory was 121.7MB in the beginning and 109.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,886 INFO L158 Benchmark]: RCFGBuilder took 474077.13ms. Allocated memory was 209.7MB in the beginning and 899.7MB in the end (delta: 690.0MB). Free memory was 109.1MB in the beginning and 724.2MB in the end (delta: -615.1MB). Peak memory consumption was 509.0MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,887 INFO L158 Benchmark]: TraceAbstraction took 906.95ms. Allocated memory is still 899.7MB. Free memory was 724.2MB in the beginning and 665.5MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,888 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 899.7MB. Free memory was 665.5MB in the beginning and 664.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:31:03,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1181.71ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 106.7MB in the beginning and 150.0MB in the end (delta: -43.3MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 228.16ms. Allocated memory is still 209.7MB. Free memory was 150.0MB in the beginning and 121.7MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 207.27ms. Allocated memory is still 209.7MB. Free memory was 121.7MB in the beginning and 109.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 474077.13ms. Allocated memory was 209.7MB in the beginning and 899.7MB in the end (delta: 690.0MB). Free memory was 109.1MB in the beginning and 724.2MB in the end (delta: -615.1MB). Peak memory consumption was 509.0MB. Max. memory is 16.1GB. * TraceAbstraction took 906.95ms. Allocated memory is still 899.7MB. Free memory was 724.2MB in the beginning and 665.5MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 899.7MB. Free memory was 665.5MB in the beginning and 664.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 302, overapproximation of bitwiseAnd at line 213. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_22 = 0; [L39] const SORT_4 var_85 = 1; [L40] const SORT_4 var_86 = 0; [L41] const SORT_2 var_96 = 0; [L42] const SORT_2 var_100 = 1; [L43] const SORT_2 var_124 = 255; [L44] const SORT_2 var_126 = 2; [L45] const SORT_3 var_151 = 0; [L46] const SORT_4 var_320 = 3; [L47] const SORT_2 var_331 = 3; [L49] SORT_1 input_95; [L50] SORT_1 input_97; [L51] SORT_1 input_98; [L52] SORT_1 input_99; [L53] SORT_1 input_106; [L54] SORT_1 input_107; [L55] SORT_1 input_108; [L56] SORT_1 input_109; [L57] SORT_1 input_115; [L58] SORT_1 input_116; [L59] SORT_1 input_117; [L60] SORT_1 input_118; [L61] SORT_1 input_125; [L62] SORT_1 input_127; [L63] SORT_1 input_128; [L64] SORT_1 input_135; [L65] SORT_1 input_136; [L66] SORT_1 input_137; [L67] SORT_1 input_138; [L68] SORT_1 input_139; [L69] SORT_1 input_140; [L70] SORT_1 input_150; [L71] SORT_1 input_158; [L72] SORT_1 input_165; [L73] SORT_1 input_173; [L74] SORT_1 input_175; [L75] SORT_1 input_179; [L76] SORT_1 input_181; [L77] SORT_1 input_190; [L78] SORT_1 input_204; [L79] SORT_1 input_215; [L80] SORT_1 input_217; [L81] SORT_1 input_221; [L82] SORT_1 input_223; [L83] SORT_1 input_232; [L84] SORT_1 input_246; [L85] SORT_1 input_257; [L86] SORT_1 input_259; [L87] SORT_1 input_263; [L88] SORT_1 input_265; [L89] SORT_1 input_274; [L90] SORT_1 input_288; [L92] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L127] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L128] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L129] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L130] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L132] SORT_2 init_7_arg_1 = var_5; [L133] state_6 = init_7_arg_1 [L134] SORT_2 init_9_arg_1 = var_5; [L135] state_8 = init_9_arg_1 [L136] SORT_2 init_11_arg_1 = var_5; [L137] state_10 = init_11_arg_1 [L138] SORT_2 init_13_arg_1 = var_5; [L139] state_12 = init_13_arg_1 [L140] SORT_2 init_15_arg_1 = var_5; [L141] state_14 = init_15_arg_1 [L142] SORT_2 init_17_arg_1 = var_5; [L143] state_16 = init_17_arg_1 [L144] SORT_2 init_19_arg_1 = var_5; [L145] state_18 = init_19_arg_1 [L146] SORT_2 init_21_arg_1 = var_5; [L147] state_20 = init_21_arg_1 [L148] SORT_1 init_24_arg_1 = var_22; [L149] state_23 = init_24_arg_1 [L150] SORT_1 init_26_arg_1 = var_22; [L151] state_25 = init_26_arg_1 [L152] SORT_1 init_28_arg_1 = var_22; [L153] state_27 = init_28_arg_1 [L154] SORT_1 init_30_arg_1 = var_22; [L155] state_29 = init_30_arg_1 [L156] SORT_1 init_32_arg_1 = var_22; [L157] state_31 = init_32_arg_1 [L158] SORT_1 init_34_arg_1 = var_22; [L159] state_33 = init_34_arg_1 [L160] SORT_1 init_36_arg_1 = var_22; [L161] state_35 = init_36_arg_1 [L162] SORT_1 init_38_arg_1 = var_22; [L163] state_37 = init_38_arg_1 [L164] SORT_1 init_40_arg_1 = var_22; [L165] state_39 = init_40_arg_1 [L166] SORT_1 init_42_arg_1 = var_22; [L167] state_41 = init_42_arg_1 [L168] SORT_1 init_44_arg_1 = var_22; [L169] state_43 = init_44_arg_1 [L170] SORT_1 init_46_arg_1 = var_22; [L171] state_45 = init_46_arg_1 [L172] SORT_1 init_48_arg_1 = var_22; [L173] state_47 = init_48_arg_1 [L174] SORT_1 init_50_arg_1 = var_22; [L175] state_49 = init_50_arg_1 [L176] SORT_1 init_52_arg_1 = var_22; [L177] state_51 = init_52_arg_1 [L178] SORT_1 init_54_arg_1 = var_22; [L179] state_53 = init_54_arg_1 [L180] SORT_1 init_56_arg_1 = var_22; [L181] state_55 = init_56_arg_1 [L182] SORT_1 init_58_arg_1 = var_22; [L183] state_57 = init_58_arg_1 [L184] SORT_1 init_60_arg_1 = var_22; [L185] state_59 = init_60_arg_1 [L186] SORT_1 init_62_arg_1 = var_22; [L187] state_61 = init_62_arg_1 [L188] SORT_1 init_64_arg_1 = var_22; [L189] state_63 = init_64_arg_1 [L190] SORT_1 init_66_arg_1 = var_22; [L191] state_65 = init_66_arg_1 [L192] SORT_1 init_68_arg_1 = var_22; [L193] state_67 = init_68_arg_1 [L194] SORT_1 init_70_arg_1 = var_22; [L195] state_69 = init_70_arg_1 [L196] SORT_1 init_72_arg_1 = var_22; [L197] state_71 = init_72_arg_1 [L198] SORT_1 init_74_arg_1 = var_22; [L199] state_73 = init_74_arg_1 [L200] SORT_1 init_76_arg_1 = var_22; [L201] state_75 = init_76_arg_1 [L202] SORT_1 init_78_arg_1 = var_22; [L203] state_77 = init_78_arg_1 [L204] SORT_1 init_80_arg_1 = var_22; [L205] state_79 = init_80_arg_1 [L206] SORT_1 init_82_arg_1 = var_22; [L207] state_81 = init_82_arg_1 [L208] SORT_1 init_84_arg_1 = var_22; [L209] state_83 = init_84_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_96=0] [L212] input_95 = __VERIFIER_nondet_uchar() [L213] input_95 = input_95 & mask_SORT_1 [L214] input_97 = __VERIFIER_nondet_uchar() [L215] input_97 = input_97 & mask_SORT_1 [L216] input_98 = __VERIFIER_nondet_uchar() [L217] input_98 = input_98 & mask_SORT_1 [L218] input_99 = __VERIFIER_nondet_uchar() [L219] input_99 = input_99 & mask_SORT_1 [L220] input_106 = __VERIFIER_nondet_uchar() [L221] input_106 = input_106 & mask_SORT_1 [L222] input_107 = __VERIFIER_nondet_uchar() [L223] input_107 = input_107 & mask_SORT_1 [L224] input_108 = __VERIFIER_nondet_uchar() [L225] input_108 = input_108 & mask_SORT_1 [L226] input_109 = __VERIFIER_nondet_uchar() [L227] input_109 = input_109 & mask_SORT_1 [L228] input_115 = __VERIFIER_nondet_uchar() [L229] input_115 = input_115 & mask_SORT_1 [L230] input_116 = __VERIFIER_nondet_uchar() [L231] input_116 = input_116 & mask_SORT_1 [L232] input_117 = __VERIFIER_nondet_uchar() [L233] input_117 = input_117 & mask_SORT_1 [L234] input_118 = __VERIFIER_nondet_uchar() [L235] input_118 = input_118 & mask_SORT_1 [L236] input_125 = __VERIFIER_nondet_uchar() [L237] input_125 = input_125 & mask_SORT_1 [L238] input_127 = __VERIFIER_nondet_uchar() [L239] input_127 = input_127 & mask_SORT_1 [L240] input_128 = __VERIFIER_nondet_uchar() [L241] input_128 = input_128 & mask_SORT_1 [L242] input_135 = __VERIFIER_nondet_uchar() [L243] input_135 = input_135 & mask_SORT_1 [L244] input_136 = __VERIFIER_nondet_uchar() [L245] input_136 = input_136 & mask_SORT_1 [L246] input_137 = __VERIFIER_nondet_uchar() [L247] input_137 = input_137 & mask_SORT_1 [L248] input_138 = __VERIFIER_nondet_uchar() [L249] input_138 = input_138 & mask_SORT_1 [L250] input_139 = __VERIFIER_nondet_uchar() [L251] input_139 = input_139 & mask_SORT_1 [L252] input_140 = __VERIFIER_nondet_uchar() [L253] input_140 = input_140 & mask_SORT_1 [L254] input_150 = __VERIFIER_nondet_uchar() [L255] input_150 = input_150 & mask_SORT_1 [L256] input_158 = __VERIFIER_nondet_uchar() [L257] input_158 = input_158 & mask_SORT_1 [L258] input_165 = __VERIFIER_nondet_uchar() [L259] input_165 = input_165 & mask_SORT_1 [L260] input_173 = __VERIFIER_nondet_uchar() [L261] input_175 = __VERIFIER_nondet_uchar() [L262] input_179 = __VERIFIER_nondet_uchar() [L263] input_181 = __VERIFIER_nondet_uchar() [L264] input_190 = __VERIFIER_nondet_uchar() [L265] input_204 = __VERIFIER_nondet_uchar() [L266] input_215 = __VERIFIER_nondet_uchar() [L267] input_217 = __VERIFIER_nondet_uchar() [L268] input_221 = __VERIFIER_nondet_uchar() [L269] input_223 = __VERIFIER_nondet_uchar() [L270] input_232 = __VERIFIER_nondet_uchar() [L271] input_246 = __VERIFIER_nondet_uchar() [L272] input_257 = __VERIFIER_nondet_uchar() [L273] input_259 = __VERIFIER_nondet_uchar() [L274] input_263 = __VERIFIER_nondet_uchar() [L275] input_265 = __VERIFIER_nondet_uchar() [L276] input_274 = __VERIFIER_nondet_uchar() [L277] input_288 = __VERIFIER_nondet_uchar() [L280] SORT_1 var_87_arg_0 = state_25; [L281] SORT_4 var_87_arg_1 = var_85; [L282] SORT_4 var_87_arg_2 = var_86; [L283] SORT_4 var_87 = var_87_arg_0 ? var_87_arg_1 : var_87_arg_2; [L284] SORT_1 var_88_arg_0 = state_45; [L285] SORT_4 var_88_arg_1 = var_85; [L286] SORT_4 var_88_arg_2 = var_86; [L287] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L288] SORT_4 var_89_arg_0 = var_87; [L289] SORT_4 var_89_arg_1 = var_88; [L290] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L291] SORT_1 var_90_arg_0 = state_65; [L292] SORT_4 var_90_arg_1 = var_85; [L293] SORT_4 var_90_arg_2 = var_86; [L294] SORT_4 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L295] SORT_4 var_91_arg_0 = var_89; [L296] SORT_4 var_91_arg_1 = var_90; [L297] SORT_4 var_91 = var_91_arg_0 + var_91_arg_1; [L298] var_91 = var_91 & mask_SORT_4 [L299] SORT_4 var_92_arg_0 = var_91; [L300] SORT_4 var_92_arg_1 = var_85; [L301] SORT_1 var_92 = var_92_arg_0 <= var_92_arg_1; [L302] SORT_1 var_93_arg_0 = ~state_83; [L303] var_93_arg_0 = var_93_arg_0 & mask_SORT_1 [L304] SORT_1 var_93_arg_1 = ~var_92; [L305] var_93_arg_1 = var_93_arg_1 & mask_SORT_1 [L306] SORT_1 var_93 = var_93_arg_0 & var_93_arg_1; [L307] var_93 = var_93 & mask_SORT_1 [L308] SORT_1 bad_94_arg_0 = var_93; [L309] CALL __VERIFIER_assert(!(bad_94_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: 0.7s, 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 [2022-11-25 23:31:03,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur --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 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 --- 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-38b53e6 [2022-11-25 23:31:06,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:31:06,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:31:06,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:31:06,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:31:06,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:31:06,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:31:06,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:31:06,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:31:06,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:31:06,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:31:06,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:31:06,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:31:06,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:31:06,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:31:06,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:31:06,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:31:06,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:31:06,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:31:06,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:31:06,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:31:06,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:31:06,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:31:06,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:31:06,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:31:06,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:31:06,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:31:06,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:31:06,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:31:06,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:31:06,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:31:06,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:31:06,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:31:06,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:31:06,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:31:06,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:31:06,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:31:06,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:31:06,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:31:06,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:31:06,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:31:06,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 23:31:06,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:31:06,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:31:06,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:31:06,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:31:06,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:31:06,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:31:06,824 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:31:06,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:31:06,825 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:31:06,825 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:31:06,826 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:31:06,827 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:31:06,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:31:06,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:31:06,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:31:06,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:31:06,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:31:06,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:31:06,829 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:31:06,829 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:31:06,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:31:06,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:31:06,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:31:06,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:31:06,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:31:06,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:31:06,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:31:06,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:31:06,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:31:06,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:31:06,832 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:31:06,832 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:31:06,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:31:06,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:31:06,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:31:06,833 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_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 [2022-11-25 23:31:07,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:31:07,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:31:07,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:31:07,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:31:07,321 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:31:07,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-25 23:31:10,698 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:31:11,105 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:31:11,109 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-25 23:31:11,133 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data/de32fcc3e/f444b054a80d4e5e869961ffef070069/FLAG8f10d3a60 [2022-11-25 23:31:11,154 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/data/de32fcc3e/f444b054a80d4e5e869961ffef070069 [2022-11-25 23:31:11,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:31:11,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:31:11,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:31:11,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:31:11,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:31:11,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:31:11" (1/1) ... [2022-11-25 23:31:11,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c35789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:11, skipping insertion in model container [2022-11-25 23:31:11,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:31:11" (1/1) ... [2022-11-25 23:31:11,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:31:11,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:31:11,444 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-25 23:31:11,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:31:11,997 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:31:12,009 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-25 23:31:12,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:31:12,234 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:31:12,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12 WrapperNode [2022-11-25 23:31:12,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:31:12,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:31:12,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:31:12,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:31:12,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,451 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2260 [2022-11-25 23:31:12,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:31:12,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:31:12,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:31:12,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:31:12,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,560 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:31:12,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:31:12,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:31:12,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:31:12,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (1/1) ... [2022-11-25 23:31:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:31:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:31:12,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:31:12,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:31:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:31:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:31:13,292 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:31:13,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:31:17,848 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:31:17,861 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:31:17,861 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:31:17,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:31:17 BoogieIcfgContainer [2022-11-25 23:31:17,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:31:17,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:31:17,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:31:17,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:31:17,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:31:11" (1/3) ... [2022-11-25 23:31:17,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7485b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:31:17, skipping insertion in model container [2022-11-25 23:31:17,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:31:12" (2/3) ... [2022-11-25 23:31:17,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7485b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:31:17, skipping insertion in model container [2022-11-25 23:31:17,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:31:17" (3/3) ... [2022-11-25 23:31:17,875 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-25 23:31:17,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:31:17,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:31:17,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:31:17,969 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;@1625d389, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:31:17,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:31:17,974 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) [2022-11-25 23:31:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:31:17,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:17,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:31:17,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:31:17,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 23:31:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:18,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247744989] [2022-11-25 23:31:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:18,010 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 [2022-11-25 23:31:18,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:18,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:31:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:31:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:18,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 23:31:18,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:19,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:31:19,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:19,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247744989] [2022-11-25 23:31:19,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247744989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:19,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:19,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:31:19,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27175086] [2022-11-25 23:31:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:31:19,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:31:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:31:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:31:19,073 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) [2022-11-25 23:31:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:19,428 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 23:31:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:31:19,432 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 [2022-11-25 23:31:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:19,441 INFO L225 Difference]: With dead ends: 20 [2022-11-25 23:31:19,441 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:31:19,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:31:19,449 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:19,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:31:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:31:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 23:31:19,481 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) [2022-11-25 23:31:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 23:31:19,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 23:31:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:19,484 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 23:31:19,484 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) [2022-11-25 23:31:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 23:31:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:31:19,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:19,485 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:19,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:31:19,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:31:19,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:31:19,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 23:31:19,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:31:19,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037174922] [2022-11-25 23:31:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:19,711 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 [2022-11-25 23:31:19,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:31:19,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:31:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:31:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:20,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 194 conjunts are in the unsatisfiable core [2022-11-25 23:31:20,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:24,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:58,598 WARN L233 SmtUtils]: Spent 26.88s on a formula simplification that was a NOOP. DAG size: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:31:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:31:59,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:31:59,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037174922] [2022-11-25 23:31:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037174922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:59,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [890187812] [2022-11-25 23:31:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:59,958 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:31:59,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:31:59,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:31:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 23:32:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:02,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-25 23:32:02,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:05,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:34:01,799 WARN L233 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 125 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:31,303 WARN L233 SmtUtils]: Spent 1.25m on a formula simplification that was a NOOP. DAG size: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:33,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [890187812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:35:33,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495730343] [2022-11-25 23:35:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:33,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:35:33,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:35:33,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06397fd5-2adb-44cb-b6ba-ccb9388f1222/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:35:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:34,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 199 conjunts are in the unsatisfiable core [2022-11-25 23:35:34,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:35:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:37,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:36:16,831 WARN L233 SmtUtils]: Spent 30.80s on a formula simplification. DAG size of input: 85 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:04,166 WARN L233 SmtUtils]: Spent 1.38m on a formula simplification that was a NOOP. DAG size: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)