./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- 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 06:34:28,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:34:28,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:34:28,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:34:28,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:34:28,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:34:28,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:34:28,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:34:28,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:34:28,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:34:28,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:34:28,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:34:28,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:34:28,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:34:28,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:34:28,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:34:28,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:34:28,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:34:28,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:34:28,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:34:28,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:34:28,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:34:28,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:34:28,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:34:28,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:34:28,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:34:28,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:34:28,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:34:28,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:34:28,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:34:28,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:34:28,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:34:28,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:34:28,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:34:28,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:34:28,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:34:28,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:34:28,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:34:28,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:34:28,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:34:28,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:34:28,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 06:34:28,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:34:28,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:34:28,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:34:28,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:34:28,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:34:28,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:34:28,397 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:34:28,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:34:28,397 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:34:28,398 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:34:28,398 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:34:28,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:34:28,398 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:34:28,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:34:28,399 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:34:28,399 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:34:28,399 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:34:28,399 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:34:28,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:34:28,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:34:28,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:34:28,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:34:28,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:34:28,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:34:28,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:34:28,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:34:28,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:34:28,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:34:28,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:34:28,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:34:28,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:34:28,403 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:34:28,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:34:28,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:34:28,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:34:28,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:34:28,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:34:28,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:34:28,409 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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-12-14 06:34:28,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:34:28,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:34:28,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:34:28,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:34:28,614 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:34:28,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-12-14 06:34:31,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:34:31,299 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:34:31,300 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-12-14 06:34:31,304 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data/405d3d930/c29fa06953604ea9a9baf4176e237d1b/FLAG8c04479df [2022-12-14 06:34:31,718 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data/405d3d930/c29fa06953604ea9a9baf4176e237d1b [2022-12-14 06:34:31,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:34:31,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:34:31,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:34:31,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:34:31,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:34:31,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435decda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31, skipping insertion in model container [2022-12-14 06:34:31,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:34:31,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:34:31,832 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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-12-14 06:34:31,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:34:31,856 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:34:31,863 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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-12-14 06:34:31,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:34:31,882 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:34:31,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31 WrapperNode [2022-12-14 06:34:31,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:34:31,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:34:31,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:34:31,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:34:31,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,906 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-14 06:34:31,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:34:31,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:34:31,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:34:31,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:34:31,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:34:31,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:34:31,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:34:31,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:34:31,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (1/1) ... [2022-12-14 06:34:31,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:34:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:34:31,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:34:31,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:34:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:34:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:34:32,046 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:34:32,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:34:32,164 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:34:32,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:34:32,177 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:34:32,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:34:32 BoogieIcfgContainer [2022-12-14 06:34:32,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:34:32,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:34:32,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:34:32,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:34:32,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:34:31" (1/3) ... [2022-12-14 06:34:32,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c3f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:34:32, skipping insertion in model container [2022-12-14 06:34:32,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:31" (2/3) ... [2022-12-14 06:34:32,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c3f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:34:32, skipping insertion in model container [2022-12-14 06:34:32,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:34:32" (3/3) ... [2022-12-14 06:34:32,184 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-12-14 06:34:32,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:34:32,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:34:32,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:34:32,234 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;@21846807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:34:32,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:34:32,237 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 06:34:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 06:34:32,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:34:32,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 06:34:32,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:34:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:34:32,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 06:34:32,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:34:32,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051627585] [2022-12-14 06:34:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:34:32,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:34:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:34:32,767 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 06:34:32,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:34:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051627585] [2022-12-14 06:34:32,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051627585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:34:32,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:34:32,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:34:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425420096] [2022-12-14 06:34:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:34:32,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:34:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:34:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:34:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:34:32,799 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 06:34:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:34:32,853 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-12-14 06:34:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:34:32,856 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 06:34:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:34:32,864 INFO L225 Difference]: With dead ends: 15 [2022-12-14 06:34:32,864 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 06:34:32,867 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 06:34:32,871 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 06:34:32,872 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 06:34:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 06:34:32,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-12-14 06:34:32,895 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 06:34:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 06:34:32,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-12-14 06:34:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:34:32,897 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 06:34:32,897 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 06:34:32,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 06:34:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 06:34:32,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:34:32,898 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-14 06:34:32,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:34:32,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:34:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:34:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2022-12-14 06:34:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:34:32,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174246237] [2022-12-14 06:34:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:34:32,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:34:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:34:32,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:34:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:34:33,082 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:34:33,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:34:33,084 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 06:34:33,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:34:33,090 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 06:34:33,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:34:33,105 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:34:33,106 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:34:33,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:34:33 BoogieIcfgContainer [2022-12-14 06:34:33,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:34:33,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:34:33,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:34:33,114 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:34:33,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:34:32" (3/4) ... [2022-12-14 06:34:33,118 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:34:33,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:34:33,118 INFO L158 Benchmark]: Toolchain (without parser) took 1397.28ms. Allocated memory is still 146.8MB. Free memory was 94.0MB in the beginning and 103.0MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:34:33,119 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:34:33,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.48ms. Allocated memory is still 146.8MB. Free memory was 93.6MB in the beginning and 83.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:34:33,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.94ms. Allocated memory is still 146.8MB. Free memory was 83.2MB in the beginning and 81.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:34:33,120 INFO L158 Benchmark]: Boogie Preprocessor took 15.94ms. Allocated memory is still 146.8MB. Free memory was 81.5MB in the beginning and 80.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:34:33,121 INFO L158 Benchmark]: RCFGBuilder took 254.98ms. Allocated memory is still 146.8MB. Free memory was 80.4MB in the beginning and 109.8MB in the end (delta: -29.4MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-12-14 06:34:33,121 INFO L158 Benchmark]: TraceAbstraction took 933.00ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 103.0MB in the end (delta: 5.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-12-14 06:34:33,121 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 146.8MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:34:33,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.48ms. Allocated memory is still 146.8MB. Free memory was 93.6MB in the beginning and 83.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.94ms. Allocated memory is still 146.8MB. Free memory was 83.2MB in the beginning and 81.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.94ms. Allocated memory is still 146.8MB. Free memory was 81.5MB in the beginning and 80.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.98ms. Allocated memory is still 146.8MB. Free memory was 80.4MB in the beginning and 109.8MB in the end (delta: -29.4MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 933.00ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 103.0MB in the end (delta: 5.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 146.8MB. Free memory is still 103.0MB. 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 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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: 0.9s, 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 06:34:33,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- 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 06:34:34,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:34:34,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:34:34,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:34:34,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:34:34,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:34:34,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:34:34,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:34:34,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:34:34,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:34:34,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:34:34,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:34:34,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:34:34,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:34:34,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:34:34,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:34:34,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:34:34,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:34:34,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:34:34,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:34:34,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:34:34,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:34:34,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:34:34,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:34:34,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:34:34,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:34:34,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:34:34,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:34:34,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:34:34,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:34:34,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:34:34,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:34:34,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:34:34,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:34:34,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:34:34,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:34:34,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:34:34,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:34:34,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:34:34,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:34:34,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:34:34,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 06:34:34,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:34:34,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:34:34,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:34:34,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:34:34,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:34:34,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:34:34,899 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:34:34,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:34:34,899 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:34:34,899 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:34:34,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:34:34,900 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:34:34,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:34:34,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:34:34,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:34:34,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:34:34,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:34:34,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:34:34,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:34:34,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:34:34,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:34:34,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:34:34,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:34:34,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:34:34,903 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:34:34,903 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:34:34,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:34:34,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:34:34,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:34:34,904 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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-12-14 06:34:35,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:34:35,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:34:35,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:34:35,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:34:35,141 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:34:35,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-12-14 06:34:37,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:34:37,882 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:34:37,882 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-12-14 06:34:37,887 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data/899fdbb23/d69ab5a6fb414270a78331d00534972c/FLAG61601ea24 [2022-12-14 06:34:37,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/data/899fdbb23/d69ab5a6fb414270a78331d00534972c [2022-12-14 06:34:37,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:34:37,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:34:37,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:34:37,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:34:37,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:34:37,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:34:37" (1/1) ... [2022-12-14 06:34:37,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eeeaea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:37, skipping insertion in model container [2022-12-14 06:34:37,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:34:37" (1/1) ... [2022-12-14 06:34:37,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:34:37,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:34:38,017 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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-12-14 06:34:38,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:34:38,045 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:34:38,053 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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-12-14 06:34:38,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:34:38,071 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:34:38,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38 WrapperNode [2022-12-14 06:34:38,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:34:38,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:34:38,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:34:38,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:34:38,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,095 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-14 06:34:38,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:34:38,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:34:38,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:34:38,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:34:38,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:34:38,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:34:38,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:34:38,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:34:38,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (1/1) ... [2022-12-14 06:34:38,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:34:38,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:34:38,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:34:38,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:34:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:34:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:34:38,241 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:34:38,242 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:34:38,351 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:34:38,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:34:38,358 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:34:38,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:34:38 BoogieIcfgContainer [2022-12-14 06:34:38,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:34:38,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:34:38,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:34:38,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:34:38,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:34:37" (1/3) ... [2022-12-14 06:34:38,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6283e28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:34:38, skipping insertion in model container [2022-12-14 06:34:38,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:34:38" (2/3) ... [2022-12-14 06:34:38,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6283e28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:34:38, skipping insertion in model container [2022-12-14 06:34:38,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:34:38" (3/3) ... [2022-12-14 06:34:38,368 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-12-14 06:34:38,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:34:38,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:34:38,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:34:38,427 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;@2ab1b7a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:34:38,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:34:38,431 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 06:34:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 06:34:38,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:34:38,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 06:34:38,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:34:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:34:38,441 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 06:34:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:34:38,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153178760] [2022-12-14 06:34:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:34:38,451 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 06:34:38,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:34:38,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:38,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:34:38,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 06:34:38,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:38,672 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 06:34:38,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:34:38,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:34:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153178760] [2022-12-14 06:34:38,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153178760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:34:38,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:34:38,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:34:38,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544769062] [2022-12-14 06:34:38,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:34:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:34:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:34:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:34:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:34:38,706 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 06:34:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:34:38,758 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 06:34:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:34:38,760 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 06:34:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:34:38,767 INFO L225 Difference]: With dead ends: 20 [2022-12-14 06:34:38,767 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 06:34:38,769 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 06:34:38,772 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 06:34:38,773 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 06:34:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 06:34:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 06:34:38,793 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 06:34:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 06:34:38,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 06:34:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:34:38,794 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 06:34:38,795 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 06:34:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 06:34:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:34:38,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:34:38,795 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 06:34:38,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:38,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:38,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:34:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:34:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 06:34:39,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:34:39,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430884358] [2022-12-14 06:34:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:34:39,003 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 06:34:39,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:34:39,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:39,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:34:39,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 06:34:39,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:39,402 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 06:34:39,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:34:39,595 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 06:34:39,595 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:34:39,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430884358] [2022-12-14 06:34:39,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430884358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:34:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1649063500] [2022-12-14 06:34:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:34:39,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:34:39,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:34:39,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:34:39,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 06:34:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:34:39,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 06:34:39,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:39,799 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 06:34:39,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:34:39,970 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 06:34:39,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1649063500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:34:39,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967134730] [2022-12-14 06:34:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:34:39,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:34:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:34:39,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:34:39,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:34:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:34:40,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 06:34:40,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:40,192 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 06:34:40,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:34:40,412 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 06:34:40,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967134730] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:34:40,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:34:40,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 17 [2022-12-14 06:34:40,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215814692] [2022-12-14 06:34:40,414 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:34:40,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 06:34:40,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:34:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 06:34:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-14 06:34:40,416 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 06:34:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:34:40,768 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 06:34:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:34:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 06:34:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:34:40,769 INFO L225 Difference]: With dead ends: 19 [2022-12-14 06:34:40,769 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 06:34:40,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:34:40,771 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:34:40,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:34:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 06:34:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 06:34:40,775 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 06:34:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 06:34:40,776 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 06:34:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:34:40,776 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 06:34:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 06:34:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 06:34:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 06:34:40,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:34:40,777 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 06:34:40,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:34:41,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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)] Forceful destruction successful, exit code 0 [2022-12-14 06:34:41,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 06:34:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:34:41,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:34:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:34:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 06:34:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:34:41,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066398669] [2022-12-14 06:34:41,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:34:41,386 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 06:34:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:34:41,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:41,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:41,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:34:41,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:34:41,470 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-14 06:34:41,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:42,333 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 06:34:42,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:34:44,721 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 06:34:44,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:34:44,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066398669] [2022-12-14 06:34:44,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066398669] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:34:44,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1392821027] [2022-12-14 06:34:44,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:34:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:34:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:34:44,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:34:44,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 06:34:44,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:34:44,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:34:44,820 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-14 06:34:44,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:45,307 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 06:34:45,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:34:46,714 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 06:34:46,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1392821027] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:34:46,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004710301] [2022-12-14 06:34:46,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:34:46,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:34:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:34:46,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:34:46,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 06:34:46,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:34:46,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:34:46,776 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-14 06:34:46,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:48,012 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 06:34:48,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:34:49,066 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 06:34:49,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004710301] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:34:49,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:34:49,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7, 8, 8] total 24 [2022-12-14 06:34:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673597040] [2022-12-14 06:34:49,066 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:34:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 06:34:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:34:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 06:34:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:34:49,068 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 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 06:34:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:34:49,480 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 06:34:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 06:34:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 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 06:34:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:34:49,480 INFO L225 Difference]: With dead ends: 22 [2022-12-14 06:34:49,480 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 06:34:49,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2022-12-14 06:34:49,481 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:34:49,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:34:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 06:34:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 06:34:49,485 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 06:34:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 06:34:49,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-12-14 06:34:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:34:49,485 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 06:34:49,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 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 06:34:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 06:34:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 06:34:49,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:34:49,486 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 06:34:49,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 06:34:49,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:49,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 06:34:50,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:34:50,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:34:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:34:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-12-14 06:34:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:34:50,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317773974] [2022-12-14 06:34:50,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:34:50,092 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 06:34:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:34:50,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:34:50,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 06:34:50,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:34:50,190 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-14 06:34:50,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:34:51,404 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 06:34:51,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:35:17,218 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 06:35:17,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:35:17,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317773974] [2022-12-14 06:35:17,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317773974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:35:17,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925441591] [2022-12-14 06:35:17,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:35:17,219 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:35:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:35:17,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:35:17,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 06:35:17,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 06:35:17,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:35:17,366 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-14 06:35:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:35:18,298 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 06:35:18,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:35:32,036 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 06:35:32,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925441591] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:35:32,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125879674] [2022-12-14 06:35:32,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:35:32,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:35:32,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:35:32,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:35:32,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 06:35:32,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 06:35:32,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:35:32,131 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-14 06:35:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:35:32,953 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 06:35:32,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:35:46,035 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 06:35:46,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125879674] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:35:46,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:35:46,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 22 [2022-12-14 06:35:46,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147716548] [2022-12-14 06:35:46,035 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:35:46,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 06:35:46,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:35:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 06:35:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-12-14 06:35:46,037 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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 06:35:52,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 06:36:01,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 06:36:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:36:09,129 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-12-14 06:36:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 06:36:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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 06:36:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:36:09,130 INFO L225 Difference]: With dead ends: 39 [2022-12-14 06:36:09,130 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 06:36:09,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 06:36:09,131 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 52 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:36:09,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 38 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 06:36:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 06:36:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-12-14 06:36:09,138 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 06:36:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-12-14 06:36:09,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2022-12-14 06:36:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:36:09,138 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-12-14 06:36:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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 06:36:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-12-14 06:36:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 06:36:09,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:36:09,139 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-12-14 06:36:09,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:36:09,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 06:36:09,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 06:36:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:36:09,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:36:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:36:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-12-14 06:36:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:36:09,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43049870] [2022-12-14 06:36:09,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 06:36:09,746 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 06:36:09,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:36:09,749 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:36:09,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:36:09,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 06:36:09,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-14 06:36:09,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:36:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:36:09,951 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 06:36:09,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:36:09,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 06:36:09,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:36:10,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/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 06:36:10,162 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2022-12-14 06:36:10,174 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:36:10,221 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,221 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,221 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,221 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,222 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,222 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,222 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:36:10 BoogieIcfgContainer [2022-12-14 06:36:10,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:36:10,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:36:10,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:36:10,234 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:36:10,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:34:38" (3/4) ... [2022-12-14 06:36:10,236 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 06:36:10,245 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,245 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,245 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,246 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,246 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,246 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,246 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 06:36:10,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:36:10,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:36:10,292 INFO L158 Benchmark]: Toolchain (without parser) took 92390.89ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 47.1MB in the beginning and 42.2MB in the end (delta: 4.9MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-12-14 06:36:10,292 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:36:10,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.32ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 36.2MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 06:36:10,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.50ms. Allocated memory is still 69.2MB. Free memory was 36.2MB in the beginning and 34.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:36:10,292 INFO L158 Benchmark]: Boogie Preprocessor took 16.73ms. Allocated memory is still 69.2MB. Free memory was 34.6MB in the beginning and 33.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:36:10,293 INFO L158 Benchmark]: RCFGBuilder took 246.90ms. Allocated memory is still 69.2MB. Free memory was 33.3MB in the beginning and 40.2MB in the end (delta: -6.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-12-14 06:36:10,293 INFO L158 Benchmark]: TraceAbstraction took 91870.60ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 39.6MB in the beginning and 49.3MB in the end (delta: -9.7MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-12-14 06:36:10,293 INFO L158 Benchmark]: Witness Printer took 57.54ms. Allocated memory is still 83.9MB. Free memory was 49.3MB in the beginning and 42.2MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 06:36:10,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.32ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 36.2MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.50ms. Allocated memory is still 69.2MB. Free memory was 36.2MB in the beginning and 34.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.73ms. Allocated memory is still 69.2MB. Free memory was 34.6MB in the beginning and 33.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.90ms. Allocated memory is still 69.2MB. Free memory was 33.3MB in the beginning and 40.2MB in the end (delta: -6.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * TraceAbstraction took 91870.60ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 39.6MB in the beginning and 49.3MB in the end (delta: -9.7MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Witness Printer took 57.54ms. Allocated memory is still 83.9MB. Free memory was 49.3MB in the beginning and 42.2MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. 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 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, 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: 91.8s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 194 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 17 mSDtfsCounter, 194 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 137 SyntacticMatches, 24 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 45.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 0.6s SatisfiabilityAnalysisTime, 64.3s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 220 ConstructedInterpolants, 74 QuantifiedInterpolants, 24087 SizeOfPredicates, 559 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 578 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 06:36:10,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01cc60f-f4b5-439f-a2a9-359cb8acce5a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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