./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI --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 e0b80b001f46b9958fd499d9a24ce530dbf6f37e78975cdf0f472d8dbdc342cd --- 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-5e519f3 [2022-11-03 03:37:23,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:37:23,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:37:23,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:37:23,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:37:23,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:37:23,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:37:23,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:37:23,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:37:23,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:37:23,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:37:23,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:37:23,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:37:23,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:37:23,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:37:23,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:37:23,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:37:23,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:37:23,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:37:23,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:37:23,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:37:23,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:37:23,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:37:23,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:37:23,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:37:23,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:37:23,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:37:23,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:37:23,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:37:23,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:37:23,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:37:23,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:37:23,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:37:23,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:37:23,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:37:23,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:37:23,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:37:23,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:37:23,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:37:23,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:37:23,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:37:23,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:37:24,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:37:24,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:37:24,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:37:24,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:37:24,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:37:24,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:37:24,012 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:37:24,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:37:24,013 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:37:24,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:37:24,014 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:37:24,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:37:24,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:37:24,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:37:24,015 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:37:24,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:37:24,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:37:24,015 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:37:24,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:37:24,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:37:24,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:37:24,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:37:24,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:37:24,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:37:24,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:37:24,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:37:24,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:37:24,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:37:24,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:37:24,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:37:24,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:37:24,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:37:24,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:37:24,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:37:24,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:37:24,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:37:24,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:37:24,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:37:24,022 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_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b80b001f46b9958fd499d9a24ce530dbf6f37e78975cdf0f472d8dbdc342cd [2022-11-03 03:37:24,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:37:24,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:37:24,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:37:24,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:37:24,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:37:24,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2022-11-03 03:37:24,491 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/e7abc7d21/589a585166194690bd155ef261710a42/FLAGbd9e6f47b [2022-11-03 03:37:24,978 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:37:24,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2022-11-03 03:37:24,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/e7abc7d21/589a585166194690bd155ef261710a42/FLAGbd9e6f47b [2022-11-03 03:37:25,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/e7abc7d21/589a585166194690bd155ef261710a42 [2022-11-03 03:37:25,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:37:25,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:37:25,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:37:25,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:37:25,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:37:25,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25672d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25, skipping insertion in model container [2022-11-03 03:37:25,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:37:25,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:37:25,542 WARN L230 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_5ab7dc9a-852a-4359-9b31-654e977974fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1107,1120] [2022-11-03 03:37:25,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:37:25,574 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:37:25,584 WARN L230 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_5ab7dc9a-852a-4359-9b31-654e977974fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1107,1120] [2022-11-03 03:37:25,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:37:25,608 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:37:25,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25 WrapperNode [2022-11-03 03:37:25,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:37:25,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:37:25,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:37:25,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:37:25,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,655 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-11-03 03:37:25,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:37:25,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:37:25,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:37:25,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:37:25,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:37:25,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:37:25,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:37:25,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:37:25,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (1/1) ... [2022-11-03 03:37:25,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:37:25,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:25,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:37:25,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:37:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:37:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:37:25,888 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:37:25,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:37:26,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:37:26,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:37:26,241 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:37:26,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:37:26 BoogieIcfgContainer [2022-11-03 03:37:26,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:37:26,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:37:26,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:37:26,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:37:26,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:37:25" (1/3) ... [2022-11-03 03:37:26,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e582fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:37:26, skipping insertion in model container [2022-11-03 03:37:26,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:25" (2/3) ... [2022-11-03 03:37:26,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e582fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:37:26, skipping insertion in model container [2022-11-03 03:37:26,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:37:26" (3/3) ... [2022-11-03 03:37:26,255 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bug-1.c [2022-11-03 03:37:26,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:37:26,274 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:37:26,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:37:26,356 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;@703abf02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:37:26,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:37:26,365 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) [2022-11-03 03:37:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:37:26,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:26,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:37:26,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2214562, now seen corresponding path program 1 times [2022-11-03 03:37:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:26,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222475179] [2022-11-03 03:37:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:26,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:37:26,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:37:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:37:26,819 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:37:26,821 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:37:26,823 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:37:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:37:26,829 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:37:26,833 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:37:26,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 03:37:26,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:37:26 BoogieIcfgContainer [2022-11-03 03:37:26,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:37:26,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:37:26,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:37:26,864 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:37:26,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:37:26" (3/4) ... [2022-11-03 03:37:26,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:37:26,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:37:26,872 INFO L158 Benchmark]: Toolchain (without parser) took 1539.06ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 55.0MB in the beginning and 89.1MB in the end (delta: -34.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:37:26,873 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 49.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:37:26,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.36ms. Allocated memory is still 96.5MB. Free memory was 75.8MB in the beginning and 72.1MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:37:26,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.72ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 70.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:37:26,876 INFO L158 Benchmark]: Boogie Preprocessor took 52.79ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:37:26,881 INFO L158 Benchmark]: RCFGBuilder took 532.12ms. Allocated memory is still 96.5MB. Free memory was 68.8MB in the beginning and 54.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 03:37:26,882 INFO L158 Benchmark]: TraceAbstraction took 615.56ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 53.9MB in the beginning and 89.1MB in the end (delta: -35.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-11-03 03:37:26,883 INFO L158 Benchmark]: Witness Printer took 6.31ms. Allocated memory is still 119.5MB. Free memory was 89.1MB in the beginning and 89.1MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:37:26,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 49.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.36ms. Allocated memory is still 96.5MB. Free memory was 75.8MB in the beginning and 72.1MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.72ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 70.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.79ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 532.12ms. Allocated memory is still 96.5MB. Free memory was 68.8MB in the beginning and 54.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 615.56ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 53.9MB in the beginning and 89.1MB in the end (delta: -35.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Witness Printer took 6.31ms. Allocated memory is still 119.5MB. Free memory was 89.1MB in the beginning and 89.1MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 56, overapproximation of bitwiseAnd at line 46. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L29] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L31] const SORT_1 var_4 = 1; [L32] const SORT_7 var_9 = 1; [L33] const SORT_1 var_17 = 0; [L35] SORT_1 input_2; [L36] SORT_1 input_3; [L38] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 init_6_arg_1 = var_4; [L41] state_5 = init_6_arg_1 VAL [init_6_arg_1=1, mask_SORT_1=1, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_7=2147483648, state_5=1, var_17=0, var_4=1, var_9=1] [L44] input_2 = __VERIFIER_nondet_uchar() [L45] input_3 = __VERIFIER_nondet_uchar() [L46] input_3 = input_3 & mask_SORT_1 [L49] SORT_1 var_8_arg_0 = state_5; [L50] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L51] SORT_7 var_8 = var_8_arg_0; [L52] SORT_7 var_10_arg_0 = var_8; [L53] SORT_7 var_10_arg_1 = var_9; [L54] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L55] SORT_1 var_13_arg_0 = var_10; [L56] SORT_1 var_13 = ~var_13_arg_0; [L57] SORT_1 var_14_arg_0 = var_4; [L58] SORT_1 var_14_arg_1 = var_13; [L59] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L60] var_14 = var_14 & mask_SORT_1 [L61] SORT_1 bad_15_arg_0 = var_14; [L62] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 03:37:26,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI --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 e0b80b001f46b9958fd499d9a24ce530dbf6f37e78975cdf0f472d8dbdc342cd --- 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-5e519f3 [2022-11-03 03:37:29,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:37:29,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:37:29,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:37:29,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:37:29,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:37:29,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:37:29,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:37:29,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:37:29,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:37:29,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:37:29,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:37:29,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:37:29,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:37:29,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:37:29,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:37:29,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:37:29,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:37:29,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:37:29,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:37:29,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:37:29,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:37:29,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:37:29,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:37:29,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:37:29,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:37:29,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:37:29,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:37:29,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:37:29,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:37:29,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:37:29,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:37:29,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:37:29,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:37:29,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:37:29,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:37:29,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:37:29,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:37:29,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:37:29,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:37:29,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:37:29,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:37:29,448 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:37:29,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:37:29,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:37:29,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:37:29,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:37:29,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:37:29,451 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:37:29,451 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:37:29,451 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:37:29,451 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:37:29,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:37:29,452 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:37:29,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:37:29,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:37:29,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:37:29,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:37:29,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:37:29,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:37:29,454 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:37:29,455 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:37:29,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:37:29,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:37:29,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:37:29,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:37:29,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:37:29,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:37:29,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:37:29,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:37:29,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:37:29,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:37:29,458 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:37:29,458 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:37:29,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:37:29,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:37:29,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:37:29,459 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_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b80b001f46b9958fd499d9a24ce530dbf6f37e78975cdf0f472d8dbdc342cd [2022-11-03 03:37:29,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:37:29,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:37:29,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:37:29,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:37:29,839 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:37:29,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2022-11-03 03:37:29,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/923518cbd/187af798833245378051cdd9356d311c/FLAG01d701682 [2022-11-03 03:37:30,503 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:37:30,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c [2022-11-03 03:37:30,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/923518cbd/187af798833245378051cdd9356d311c/FLAG01d701682 [2022-11-03 03:37:30,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/data/923518cbd/187af798833245378051cdd9356d311c [2022-11-03 03:37:30,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:37:30,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:37:30,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:37:30,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:37:30,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:37:30,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:37:30" (1/1) ... [2022-11-03 03:37:30,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f891e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:30, skipping insertion in model container [2022-11-03 03:37:30,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:37:30" (1/1) ... [2022-11-03 03:37:30,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:37:30,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:37:31,055 WARN L230 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_5ab7dc9a-852a-4359-9b31-654e977974fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1107,1120] [2022-11-03 03:37:31,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:37:31,093 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:37:31,105 WARN L230 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_5ab7dc9a-852a-4359-9b31-654e977974fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bug-1.c[1107,1120] [2022-11-03 03:37:31,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:37:31,130 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:37:31,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31 WrapperNode [2022-11-03 03:37:31,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:37:31,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:37:31,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:37:31,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:37:31,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,170 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-11-03 03:37:31,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:37:31,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:37:31,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:37:31,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:37:31,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:37:31,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:37:31,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:37:31,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:37:31,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (1/1) ... [2022-11-03 03:37:31,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:37:31,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:31,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:37:31,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:37:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:37:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:37:31,401 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:37:31,403 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:37:31,592 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:37:31,598 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:37:31,598 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:37:31,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:37:31 BoogieIcfgContainer [2022-11-03 03:37:31,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:37:31,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:37:31,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:37:31,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:37:31,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:37:30" (1/3) ... [2022-11-03 03:37:31,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c452c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:37:31, skipping insertion in model container [2022-11-03 03:37:31,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:37:31" (2/3) ... [2022-11-03 03:37:31,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c452c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:37:31, skipping insertion in model container [2022-11-03 03:37:31,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:37:31" (3/3) ... [2022-11-03 03:37:31,608 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bug-1.c [2022-11-03 03:37:31,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:37:31,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:37:31,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:37:31,730 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;@51521d54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:37:31,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:37:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-03 03:37:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 03:37:31,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:31,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 03:37:31,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 03:37:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:37:31,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807501541] [2022-11-03 03:37:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:31,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:37:31,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:37:31,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:37:31,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:37:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:31,914 WARN L261 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:37:31,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:32,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:37:32,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:37:32,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807501541] [2022-11-03 03:37:32,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807501541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:32,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:32,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:37:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239240515] [2022-11-03 03:37:32,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:37:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:37:32,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:37:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:37:32,178 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-03 03:37:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:32,231 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2022-11-03 03:37:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:37:32,234 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 [2022-11-03 03:37:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:32,242 INFO L225 Difference]: With dead ends: 32 [2022-11-03 03:37:32,243 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 03:37:32,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:37:32,249 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:32,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:37:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 03:37:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-03 03:37:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-03 03:37:32,284 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2022-11-03 03:37:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:32,285 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-03 03:37:32,285 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) [2022-11-03 03:37:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-03 03:37:32,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:37:32,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:32,286 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:32,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:32,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:37:32,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 505863741, now seen corresponding path program 1 times [2022-11-03 03:37:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:37:32,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573404464] [2022-11-03 03:37:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:32,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:37:32,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:37:32,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:37:32,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:37:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:32,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:37:32,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:32,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:37:32,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:37:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573404464] [2022-11-03 03:37:32,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573404464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:32,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:32,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:37:32,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784643128] [2022-11-03 03:37:32,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:32,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:37:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:37:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:37:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:37:32,636 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:32,653 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-11-03 03:37:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:37:32,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:37:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:32,654 INFO L225 Difference]: With dead ends: 23 [2022-11-03 03:37:32,654 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 03:37:32,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:37:32,656 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:32,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:37:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 03:37:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-03 03:37:32,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-11-03 03:37:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-03 03:37:32,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2022-11-03 03:37:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:32,662 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-03 03:37:32,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-03 03:37:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:37:32,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:32,663 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:32,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:32,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:37:32,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:32,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2014096193, now seen corresponding path program 1 times [2022-11-03 03:37:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:37:32,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13322219] [2022-11-03 03:37:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:32,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:37:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:37:32,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:37:32,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:37:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:32,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 03:37:32,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:37:33,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:37:33,923 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:37:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13322219] [2022-11-03 03:37:33,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13322219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:33,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1081900924] [2022-11-03 03:37:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:33,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:37:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:37:33,935 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:37:33,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 03:37:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:34,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 03:37:34,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:37:34,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:37:34,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1081900924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:34,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975225406] [2022-11-03 03:37:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:34,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:34,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:34,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:37:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:34,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 03:37:34,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:37:34,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:37:34,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975225406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:34,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:37:34,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 9] total 16 [2022-11-03 03:37:34,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549549732] [2022-11-03 03:37:34,952 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:37:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:37:34,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:37:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:37:34,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:37:34,954 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:35,202 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-03 03:37:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:37:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:37:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:35,203 INFO L225 Difference]: With dead ends: 24 [2022-11-03 03:37:35,203 INFO L226 Difference]: Without dead ends: 22 [2022-11-03 03:37:35,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:37:35,205 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:35,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 75 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2022-11-03 03:37:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-03 03:37:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2022-11-03 03:37:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-11-03 03:37:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-03 03:37:35,211 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-11-03 03:37:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:35,212 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-03 03:37:35,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-03 03:37:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:37:35,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:35,213 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:35,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:35,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-03 03:37:35,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:35,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2015943235, now seen corresponding path program 1 times [2022-11-03 03:37:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:37:35,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007198850] [2022-11-03 03:37:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:35,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:37:35,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:37:35,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:37:35,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:37:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:35,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 03:37:35,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:36,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:36,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:37:36,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007198850] [2022-11-03 03:37:36,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007198850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:36,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944691712] [2022-11-03 03:37:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:36,368 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:37:36,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:37:36,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:37:36,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-03 03:37:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:36,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 03:37:36,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:36,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:36,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [944691712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578562538] [2022-11-03 03:37:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:36,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:36,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:36,730 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:36,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:37:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:36,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:37:36,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:36,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:37,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578562538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:37,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:37:37,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 14 [2022-11-03 03:37:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115270411] [2022-11-03 03:37:37,156 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:37:37,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:37:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:37:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:37:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:37:37,158 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:37,501 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-11-03 03:37:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:37:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:37:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:37,504 INFO L225 Difference]: With dead ends: 72 [2022-11-03 03:37:37,504 INFO L226 Difference]: Without dead ends: 70 [2022-11-03 03:37:37,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:37:37,506 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 99 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:37,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 85 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-11-03 03:37:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-03 03:37:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2022-11-03 03:37:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 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) [2022-11-03 03:37:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-11-03 03:37:37,517 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 12 [2022-11-03 03:37:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:37,518 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-11-03 03:37:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-11-03 03:37:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:37:37,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:37,519 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:37,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-11-03 03:37:37,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:37,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:38,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:37:38,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash -870279925, now seen corresponding path program 1 times [2022-11-03 03:37:38,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:37:38,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343868829] [2022-11-03 03:37:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:38,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:37:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:37:38,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:37:38,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:37:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:38,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 03:37:38,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:37:38,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:37:39,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:37:39,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343868829] [2022-11-03 03:37:39,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343868829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:39,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1770655666] [2022-11-03 03:37:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:39,142 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:37:39,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:37:39,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:37:39,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 03:37:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:39,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 03:37:39,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:37:39,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:37:39,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1770655666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:39,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510827109] [2022-11-03 03:37:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:39,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:39,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:39,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:39,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:37:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:39,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 03:37:39,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:37:39,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:37:40,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510827109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:40,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:37:40,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 20 [2022-11-03 03:37:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783236744] [2022-11-03 03:37:40,228 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:37:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:37:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:37:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:37:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:37:40,230 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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) [2022-11-03 03:37:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:40,754 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2022-11-03 03:37:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:37:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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 19 [2022-11-03 03:37:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:40,755 INFO L225 Difference]: With dead ends: 63 [2022-11-03 03:37:40,755 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:37:40,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:37:40,757 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:40,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 0 Unknown, 91 Unchecked, 0.1s Time] [2022-11-03 03:37:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:37:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:37:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:37:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:37:40,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-03 03:37:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:40,759 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:37:40,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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) [2022-11-03 03:37:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:37:40,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:37:40,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:37:40,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:41,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:41,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:41,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:37:41,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:37:41,473 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 03:37:41,473 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 75) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~state_5~0#1|) (= |ULTIMATE.start_main_~var_17~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_4~0#1|) (= |ULTIMATE.start_main_~var_9~0#1| (_ bv1 32))) [2022-11-03 03:37:41,473 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-11-03 03:37:41,473 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 75) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point L67-2(line 67) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-03 03:37:41,474 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-03 03:37:41,475 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-03 03:37:41,475 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-03 03:37:41,475 INFO L895 garLoopResultBuilder]: At program point L76(lines 22 77) the Hoare annotation is: false [2022-11-03 03:37:41,478 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-03 03:37:41,480 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:37:41,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:37:41 BoogieIcfgContainer [2022-11-03 03:37:41,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:37:41,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:37:41,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:37:41,496 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:37:41,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:37:31" (3/4) ... [2022-11-03 03:37:41,499 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:37:41,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 03:37:41,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 03:37:41,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:37:41,586 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:37:41,588 INFO L158 Benchmark]: Toolchain (without parser) took 10726.49ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 39.7MB in the beginning and 79.0MB in the end (delta: -39.3MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2022-11-03 03:37:41,589 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:37:41,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.54ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 29.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:37:41,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.06ms. Allocated memory is still 60.8MB. Free memory was 29.1MB in the beginning and 27.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:37:41,590 INFO L158 Benchmark]: Boogie Preprocessor took 46.33ms. Allocated memory is still 60.8MB. Free memory was 27.5MB in the beginning and 44.0MB in the end (delta: -16.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-11-03 03:37:41,590 INFO L158 Benchmark]: RCFGBuilder took 376.31ms. Allocated memory is still 60.8MB. Free memory was 44.0MB in the beginning and 33.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:37:41,590 INFO L158 Benchmark]: TraceAbstraction took 9892.96ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 32.8MB in the beginning and 81.1MB in the end (delta: -48.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2022-11-03 03:37:41,591 INFO L158 Benchmark]: Witness Printer took 92.25ms. Allocated memory is still 130.0MB. Free memory was 81.1MB in the beginning and 79.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:37:41,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.54ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 29.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.06ms. Allocated memory is still 60.8MB. Free memory was 29.1MB in the beginning and 27.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.33ms. Allocated memory is still 60.8MB. Free memory was 27.5MB in the beginning and 44.0MB in the end (delta: -16.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 376.31ms. Allocated memory is still 60.8MB. Free memory was 44.0MB in the beginning and 33.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9892.96ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 32.8MB in the beginning and 81.1MB in the end (delta: -48.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Witness Printer took 92.25ms. Allocated memory is still 130.0MB. Free memory was 81.1MB in the beginning and 79.0MB in the end (delta: 2.1MB). 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 215 IncrementalHoareTripleChecker+Unchecked, 224 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 207 IncrementalHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 45 mSDtfsCounter, 207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 195 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 17 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 563 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 255 ConstructedInterpolants, 93 QuantifiedInterpolants, 4675 SizeOfPredicates, 228 NumberOfNonLiveVariables, 709 ConjunctsInSsa, 258 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 20/92 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((1bv8 == mask_SORT_1 && 1bv8 == state_5) && var_17 == 0bv8) && 1bv8 == var_4) && var_9 == 1bv32 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 03:37:41,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab7dc9a-852a-4359-9b31-654e977974fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null