./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh --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 2f44fa11a1dd7d51d0d358dc0be8599fc2c4344e45a49d551a2296ddeb6ce8ad --- 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-2329fc7 [2022-12-14 03:08:38,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:08:38,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:08:38,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:08:38,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:08:38,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:08:38,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:08:38,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:08:38,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:08:38,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:08:38,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:08:38,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:08:38,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:08:38,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:08:38,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:08:38,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:08:38,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:08:38,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:08:38,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:08:38,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:08:38,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:08:38,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:08:38,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:08:38,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:08:38,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:08:38,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:08:38,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:08:38,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:08:38,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:08:38,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:08:38,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:08:38,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:08:38,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:08:38,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:08:38,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:08:38,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:08:38,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:08:38,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:08:38,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:08:38,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:08:38,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:08:38,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 03:08:38,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:08:38,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:08:38,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:08:38,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:08:38,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:08:38,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:08:38,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:08:38,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:08:38,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:08:38,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:08:38,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:08:38,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:08:38,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:08:38,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:08:38,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:08:38,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:08:38,128 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:08:38,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:08:38,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:08:38,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:08:38,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:08:38,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:08:38,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:08:38,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:08:38,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:08:38,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:08:38,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:08:38,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:08:38,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:08:38,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:08:38,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:08:38,131 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:08:38,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:08:38,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:08:38,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:08:38,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:08:38,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:08:38,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:08:38,132 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_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f44fa11a1dd7d51d0d358dc0be8599fc2c4344e45a49d551a2296ddeb6ce8ad [2022-12-14 03:08:38,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:08:38,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:08:38,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:08:38,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:08:38,341 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:08:38,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c [2022-12-14 03:08:40,888 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:08:41,066 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:08:41,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c [2022-12-14 03:08:41,072 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data/131b0e64a/e26dd0fee1334aadaa903fb6282d4028/FLAG4d24efe31 [2022-12-14 03:08:41,493 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data/131b0e64a/e26dd0fee1334aadaa903fb6282d4028 [2022-12-14 03:08:41,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:08:41,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:08:41,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:08:41,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:08:41,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:08:41,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266f6f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41, skipping insertion in model container [2022-12-14 03:08:41,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:08:41,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:08:41,630 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c[1117,1130] [2022-12-14 03:08:41,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:08:41,661 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:08:41,672 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c[1117,1130] [2022-12-14 03:08:41,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:08:41,692 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:08:41,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41 WrapperNode [2022-12-14 03:08:41,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:08:41,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:08:41,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:08:41,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:08:41,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,715 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-14 03:08:41,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:08:41,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:08:41,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:08:41,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:08:41,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:08:41,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:08:41,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:08:41,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:08:41,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (1/1) ... [2022-12-14 03:08:41,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:08:41,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:08:41,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:08:41,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:08:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:08:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:08:41,858 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:08:41,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:08:41,977 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:08:41,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:08:41,988 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:08:41,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:41 BoogieIcfgContainer [2022-12-14 03:08:41,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:08:41,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:08:41,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:08:41,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:08:41,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:08:41" (1/3) ... [2022-12-14 03:08:41,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b09b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:41, skipping insertion in model container [2022-12-14 03:08:41,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:41" (2/3) ... [2022-12-14 03:08:41,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b09b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:41, skipping insertion in model container [2022-12-14 03:08:41,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:41" (3/3) ... [2022-12-14 03:08:41,996 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2.c [2022-12-14 03:08:42,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:08:42,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:08:42,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:08:42,047 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;@78393477, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:08:42,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:08:42,050 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) [2022-12-14 03:08:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 03:08:42,055 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:42,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 03:08:42,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:42,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 03:08:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:08:42,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989335853] [2022-12-14 03:08:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:08:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:42,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:08:42,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989335853] [2022-12-14 03:08:42,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989335853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:08:42,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:08:42,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:08:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884682890] [2022-12-14 03:08:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:08:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:08:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:08:42,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:08:42,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:08:42,581 INFO L87 Difference]: Start difference. First 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 03:08:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:08:42,635 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-12-14 03:08:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:08:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-12-14 03:08:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:08:42,645 INFO L225 Difference]: With dead ends: 15 [2022-12-14 03:08:42,645 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 03:08:42,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:08:42,651 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:08:42,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:08:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 03:08:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-12-14 03:08:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-12-14 03:08:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 03:08:42,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-12-14 03:08:42,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:08:42,674 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 03:08:42,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 03:08:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 03:08:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 03:08:42,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:42,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-14 03:08:42,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:08:42,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2022-12-14 03:08:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:08:42,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144860921] [2022-12-14 03:08:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:08:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:08:42,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:08:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:08:42,863 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 03:08:42,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 03:08:42,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 03:08:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:08:42,870 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 03:08:42,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 03:08:42,889 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:08:42,889 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:08:42,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:08:42 BoogieIcfgContainer [2022-12-14 03:08:42,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 03:08:42,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 03:08:42,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 03:08:42,897 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 03:08:42,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:41" (3/4) ... [2022-12-14 03:08:42,901 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 03:08:42,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 03:08:42,902 INFO L158 Benchmark]: Toolchain (without parser) took 1400.90ms. Allocated memory is still 153.1MB. Free memory was 118.2MB in the beginning and 68.6MB in the end (delta: 49.6MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2022-12-14 03:08:42,902 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:08:42,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.47ms. Allocated memory is still 153.1MB. Free memory was 117.7MB in the beginning and 107.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 03:08:42,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.68ms. Allocated memory is still 153.1MB. Free memory was 107.2MB in the beginning and 105.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:08:42,904 INFO L158 Benchmark]: Boogie Preprocessor took 15.08ms. Allocated memory is still 153.1MB. Free memory was 105.6MB in the beginning and 104.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:08:42,904 INFO L158 Benchmark]: RCFGBuilder took 258.51ms. Allocated memory is still 153.1MB. Free memory was 104.0MB in the beginning and 90.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 03:08:42,905 INFO L158 Benchmark]: TraceAbstraction took 905.36ms. Allocated memory is still 153.1MB. Free memory was 90.4MB in the beginning and 69.3MB in the end (delta: 21.0MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-12-14 03:08:42,905 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 153.1MB. Free memory was 69.3MB in the beginning and 68.6MB in the end (delta: 796.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:08:42,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.47ms. Allocated memory is still 153.1MB. Free memory was 117.7MB in the beginning and 107.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.68ms. Allocated memory is still 153.1MB. Free memory was 107.2MB in the beginning and 105.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.08ms. Allocated memory is still 153.1MB. Free memory was 105.6MB in the beginning and 104.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 258.51ms. Allocated memory is still 153.1MB. Free memory was 104.0MB in the beginning and 90.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 905.36ms. Allocated memory is still 153.1MB. Free memory was 90.4MB in the beginning and 69.3MB in the end (delta: 21.0MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 153.1MB. Free memory was 69.3MB in the beginning and 68.6MB in the end (delta: 796.7kB). 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: 21]: 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 76, overapproximation of bitwiseAnd at line 48. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = mask_SORT_2; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-12-14 03:08:42,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh --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 2f44fa11a1dd7d51d0d358dc0be8599fc2c4344e45a49d551a2296ddeb6ce8ad --- 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-2329fc7 [2022-12-14 03:08:44,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:08:44,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:08:44,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:08:44,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:08:44,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:08:44,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:08:44,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:08:44,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:08:44,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:08:44,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:08:44,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:08:44,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:08:44,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:08:44,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:08:44,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:08:44,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:08:44,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:08:44,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:08:44,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:08:44,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:08:44,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:08:44,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:08:44,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:08:44,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:08:44,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:08:44,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:08:44,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:08:44,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:08:44,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:08:44,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:08:44,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:08:44,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:08:44,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:08:44,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:08:44,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:08:44,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:08:44,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:08:44,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:08:44,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:08:44,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:08:44,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 03:08:44,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:08:44,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:08:44,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:08:44,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:08:44,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:08:44,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:08:44,594 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:08:44,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:08:44,594 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:08:44,594 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:08:44,594 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:08:44,594 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:08:44,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:08:44,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:08:44,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:08:44,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:08:44,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:08:44,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:08:44,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:08:44,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 03:08:44,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:08:44,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:08:44,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 03:08:44,598 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_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f44fa11a1dd7d51d0d358dc0be8599fc2c4344e45a49d551a2296ddeb6ce8ad [2022-12-14 03:08:44,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:08:44,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:08:44,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:08:44,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:08:44,843 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:08:44,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c [2022-12-14 03:08:47,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:08:47,617 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:08:47,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c [2022-12-14 03:08:47,623 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data/a1bbaac9a/51e99390f8ab40229124a3a447c8f46d/FLAG625786158 [2022-12-14 03:08:47,633 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/data/a1bbaac9a/51e99390f8ab40229124a3a447c8f46d [2022-12-14 03:08:47,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:08:47,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:08:47,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:08:47,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:08:47,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:08:47,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6419cb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47, skipping insertion in model container [2022-12-14 03:08:47,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:08:47,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:08:47,762 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c[1117,1130] [2022-12-14 03:08:47,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:08:47,797 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:08:47,805 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2.c[1117,1130] [2022-12-14 03:08:47,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:08:47,823 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:08:47,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47 WrapperNode [2022-12-14 03:08:47,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:08:47,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:08:47,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:08:47,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:08:47,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,851 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-14 03:08:47,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:08:47,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:08:47,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:08:47,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:08:47,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:08:47,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:08:47,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:08:47,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:08:47,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (1/1) ... [2022-12-14 03:08:47,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:08:47,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:08:47,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:08:47,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:08:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:08:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:08:48,007 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:08:48,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:08:48,111 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:08:48,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:08:48,118 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:08:48,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:48 BoogieIcfgContainer [2022-12-14 03:08:48,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:08:48,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:08:48,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:08:48,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:08:48,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:08:47" (1/3) ... [2022-12-14 03:08:48,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6ef632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:48, skipping insertion in model container [2022-12-14 03:08:48,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:47" (2/3) ... [2022-12-14 03:08:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6ef632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:48, skipping insertion in model container [2022-12-14 03:08:48,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:48" (3/3) ... [2022-12-14 03:08:48,129 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2.c [2022-12-14 03:08:48,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:08:48,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:08:48,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:08:48,197 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;@2e7d2105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:08:48,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:08:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:08:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 03:08:48,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:48,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 03:08:48,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 03:08:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:08:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113537367] [2022-12-14 03:08:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:08:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:08:48,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 03:08:48,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 03:08:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:48,273 WARN L261 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 03:08:48,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:48,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:08:48,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:08:48,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113537367] [2022-12-14 03:08:48,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113537367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:08:48,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:08:48,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:08:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230243769] [2022-12-14 03:08:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:08:48,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:08:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:08:48,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:08:48,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:08:48,461 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:08:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:08:48,513 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 03:08:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:08:48,515 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 [2022-12-14 03:08:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:08:48,521 INFO L225 Difference]: With dead ends: 20 [2022-12-14 03:08:48,521 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 03:08:48,523 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 [2022-12-14 03:08:48,526 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:08:48,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:08:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 03:08:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 03:08:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:08:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 03:08:48,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 03:08:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:08:48,550 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 03:08:48,550 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) [2022-12-14 03:08:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 03:08:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:08:48,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:48,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 03:08:48,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 03:08:48,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:08:48,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:48,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 03:08:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:08:48,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046364384] [2022-12-14 03:08:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:08:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:08:48,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 03:08:48,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 03:08:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:48,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 03:08:48,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:49,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:49,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:08:49,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046364384] [2022-12-14 03:08:49,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046364384] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:49,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [597143322] [2022-12-14 03:08:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:49,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:08:49,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:08:49,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:08:49,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 03:08:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:49,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 03:08:49,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:49,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:49,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [597143322] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:49,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989617898] [2022-12-14 03:08:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:49,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:08:49,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:08:49,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 03:08:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:49,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 03:08:49,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:49,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:50,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989617898] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:50,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 03:08:50,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-12-14 03:08:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790113771] [2022-12-14 03:08:50,016 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 03:08:50,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 03:08:50,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:08:50,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 03:08:50,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-14 03:08:50,019 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 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) [2022-12-14 03:08:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:08:50,240 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 03:08:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 03:08:50,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 03:08:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:08:50,242 INFO L225 Difference]: With dead ends: 19 [2022-12-14 03:08:50,242 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 03:08:50,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-14 03:08:50,243 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:08:50,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:08:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 03:08:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 03:08:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:08:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 03:08:50,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 03:08:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:08:50,250 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 03:08:50,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 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) [2022-12-14 03:08:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 03:08:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 03:08:50,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:50,251 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 03:08:50,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 03:08:50,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 03:08:50,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 03:08:50,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:50,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 03:08:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:08:50,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130598358] [2022-12-14 03:08:50,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 03:08:50,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:08:50,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:08:50,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 03:08:50,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 03:08:50,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 03:08:50,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:08:50,913 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-14 03:08:50,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:51,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:53,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:08:53,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130598358] [2022-12-14 03:08:53,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130598358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:53,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [450560981] [2022-12-14 03:08:53,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 03:08:53,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:08:53,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:08:53,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:08:53,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 03:08:53,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 03:08:53,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:08:53,593 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-14 03:08:53,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:54,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:55,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [450560981] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:55,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343591117] [2022-12-14 03:08:55,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 03:08:55,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:55,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:08:55,435 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:08:55,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 03:08:55,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 03:08:55,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:08:55,477 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-14 03:08:55,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:56,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:08:57,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343591117] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:57,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 03:08:57,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7, 11, 11] total 29 [2022-12-14 03:08:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152325536] [2022-12-14 03:08:57,797 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 03:08:57,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 03:08:57,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:08:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 03:08:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2022-12-14 03:08:57,798 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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) [2022-12-14 03:08:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:08:58,519 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 03:08:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 03:08:58,519 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 03:08:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:08:58,520 INFO L225 Difference]: With dead ends: 22 [2022-12-14 03:08:58,520 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 03:08:58,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 03:08:58,522 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:08:58,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:08:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 03:08:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 03:08:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:08:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 03:08:58,528 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-12-14 03:08:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:08:58,528 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 03:08:58,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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) [2022-12-14 03:08:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 03:08:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 03:08:58,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:58,529 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 03:08:58,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 03:08:58,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 03:08:58,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 03:08:59,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:59,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-12-14 03:08:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:08:59,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011545639] [2022-12-14 03:08:59,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:08:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:08:59,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:08:59,137 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 03:08:59,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 03:08:59,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 03:08:59,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:08:59,185 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-14 03:08:59,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:00,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:10,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011545639] [2022-12-14 03:09:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011545639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1134492476] [2022-12-14 03:09:10,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:09:10,586 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:09:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:09:10,586 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:09:10,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 03:09:10,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 03:09:10,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:10,696 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-14 03:09:10,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:11,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:26,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1134492476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:26,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287859294] [2022-12-14 03:09:26,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:09:26,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:26,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:26,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:26,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 03:09:26,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 03:09:26,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:26,183 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 102 conjunts are in the unsatisfiable core [2022-12-14 03:09:26,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:28,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:41,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287859294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:41,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 03:09:41,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12, 12, 11, 11] total 40 [2022-12-14 03:09:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735923218] [2022-12-14 03:09:41,219 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-14 03:09:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-14 03:09:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1202, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 03:09:41,220 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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) [2022-12-14 03:09:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:52,903 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-12-14 03:09:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 03:09:52,903 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 03:09:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:52,904 INFO L225 Difference]: With dead ends: 39 [2022-12-14 03:09:52,904 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 03:09:52,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=605, Invalid=2151, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 03:09:52,905 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 67 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:52,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 63 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 03:09:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 03:09:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-12-14 03:09:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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) [2022-12-14 03:09:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-12-14 03:09:52,913 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2022-12-14 03:09:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:52,913 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-12-14 03:09:52,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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) [2022-12-14 03:09:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-12-14 03:09:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 03:09:52,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:52,914 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-12-14 03:09:52,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 03:09:53,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 03:09:53,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 03:09:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:09:53,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:09:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-12-14 03:09:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:53,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145083958] [2022-12-14 03:09:53,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 03:09:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:09:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:53,523 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 03:09:53,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 03:09:53,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 03:09:53,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-14 03:09:53,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:09:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:09:53,719 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 03:09:53,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 03:09:53,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 03:09:53,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 03:09:53,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:09:53,932 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2022-12-14 03:09:53,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,987 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:53,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:09:53 BoogieIcfgContainer [2022-12-14 03:09:53,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 03:09:53,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 03:09:53,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 03:09:53,999 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 03:09:54,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:48" (3/4) ... [2022-12-14 03:09:54,001 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 03:09:54,012 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,013 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,013 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,013 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,013 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,013 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,013 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 03:09:54,058 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 03:09:54,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 03:09:54,059 INFO L158 Benchmark]: Toolchain (without parser) took 66423.19ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 54.3MB in the beginning and 46.1MB in the end (delta: 8.2MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2022-12-14 03:09:54,059 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:09:54,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.27ms. Allocated memory is still 75.5MB. Free memory was 54.1MB in the beginning and 43.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 03:09:54,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.55ms. Allocated memory is still 75.5MB. Free memory was 43.2MB in the beginning and 41.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:09:54,060 INFO L158 Benchmark]: Boogie Preprocessor took 19.55ms. Allocated memory is still 75.5MB. Free memory was 41.5MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 03:09:54,060 INFO L158 Benchmark]: RCFGBuilder took 248.57ms. Allocated memory is still 75.5MB. Free memory was 40.1MB in the beginning and 48.3MB in the end (delta: -8.2MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-12-14 03:09:54,061 INFO L158 Benchmark]: TraceAbstraction took 65876.30ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 47.7MB in the beginning and 53.4MB in the end (delta: -5.7MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2022-12-14 03:09:54,061 INFO L158 Benchmark]: Witness Printer took 59.70ms. Allocated memory is still 134.2MB. Free memory was 53.4MB in the beginning and 46.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 03:09:54,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.27ms. Allocated memory is still 75.5MB. Free memory was 54.1MB in the beginning and 43.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.55ms. Allocated memory is still 75.5MB. Free memory was 43.2MB in the beginning and 41.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.55ms. Allocated memory is still 75.5MB. Free memory was 41.5MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 248.57ms. Allocated memory is still 75.5MB. Free memory was 40.1MB in the beginning and 48.3MB in the end (delta: -8.2MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * TraceAbstraction took 65876.30ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 47.7MB in the beginning and 53.4MB in the end (delta: -5.7MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. * Witness Printer took 59.70ms. Allocated memory is still 134.2MB. Free memory was 53.4MB in the beginning and 46.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = mask_SORT_2; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=1, next_15_arg_1=0, state_5=1, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=2, next_15_arg_1=0, state_5=2, state_6=0, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=3, next_15_arg_1=0, state_5=3, state_6=0, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=3, next_15_arg_1=1, state_5=3, state_6=1, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=3, next_15_arg_1=2, state_5=3, state_6=2, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.8s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 17 mSDtfsCounter, 241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 129 SyntacticMatches, 12 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 35.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 44, 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 49.7s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 220 ConstructedInterpolants, 82 QuantifiedInterpolants, 51157 SizeOfPredicates, 566 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 587 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/258 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 proved your program to be incorrect! [2022-12-14 03:09:54,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63d679b-459c-4dc4-8f37-ade26020cbe0/bin/utaipan-gh47qXpMRh/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE