./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW --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 4f767659aef273937b209b166fb1e0efe89714175079fa1bd2cb01c19aa1ec81 --- 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-4e7fbc6 [2022-11-23 15:38:05,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:38:05,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:38:05,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:38:05,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:38:05,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:38:05,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:38:05,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:38:05,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:38:05,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:38:05,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:38:05,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:38:05,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:38:05,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:38:05,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:38:05,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:38:05,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:38:05,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:38:05,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:38:05,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:38:05,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:38:05,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:38:05,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:38:05,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:38:05,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:38:05,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:38:05,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:38:05,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:38:05,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:38:05,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:38:05,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:38:05,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:38:05,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:38:05,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:38:05,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:38:05,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:38:05,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:38:05,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:38:05,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:38:05,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:38:05,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:38:05,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:38:05,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:38:05,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:38:05,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:38:05,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:38:05,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:38:05,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:38:05,161 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:38:05,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:38:05,162 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:38:05,162 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:38:05,163 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:38:05,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:38:05,164 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:38:05,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:38:05,164 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:38:05,164 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:38:05,164 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:38:05,165 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:38:05,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:38:05,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:38:05,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:38:05,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:38:05,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:38:05,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:38:05,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:38:05,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:38:05,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:38:05,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:38:05,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:38:05,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:38:05,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:38:05,169 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:38:05,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:38:05,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:38:05,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:38:05,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:38:05,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:38:05,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:38:05,170 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_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f767659aef273937b209b166fb1e0efe89714175079fa1bd2cb01c19aa1ec81 [2022-11-23 15:38:05,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:38:05,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:38:05,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:38:05,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:38:05,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:38:05,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c [2022-11-23 15:38:08,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:38:08,750 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:38:08,750 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c [2022-11-23 15:38:08,758 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data/7c5851ca5/531a4938942a40c68313d2e76f2000dd/FLAG5ba020101 [2022-11-23 15:38:08,800 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data/7c5851ca5/531a4938942a40c68313d2e76f2000dd [2022-11-23 15:38:08,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:38:08,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:38:08,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:38:08,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:38:08,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:38:08,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:08" (1/1) ... [2022-11-23 15:38:08,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e25321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:08, skipping insertion in model container [2022-11-23 15:38:08,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:08" (1/1) ... [2022-11-23 15:38:08,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:38:08,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:38:09,023 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_65c02e61-42ea-437a-a966-316eb903af0f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1107,1120] [2022-11-23 15:38:09,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:38:09,085 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:38:09,096 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_65c02e61-42ea-437a-a966-316eb903af0f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1107,1120] [2022-11-23 15:38:09,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:38:09,141 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:38:09,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09 WrapperNode [2022-11-23 15:38:09,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:38:09,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:38:09,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:38:09,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:38:09,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,210 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2022-11-23 15:38:09,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:38:09,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:38:09,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:38:09,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:38:09,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:38:09,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:38:09,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:38:09,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:38:09,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:38:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:38:09,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:38:09,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:38:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:38:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:38:09,427 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:38:09,430 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:38:09,975 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:38:10,000 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:38:10,000 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:38:10,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:10 BoogieIcfgContainer [2022-11-23 15:38:10,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:38:10,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:38:10,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:38:10,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:38:10,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:38:08" (1/3) ... [2022-11-23 15:38:10,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4ade10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:10, skipping insertion in model container [2022-11-23 15:38:10,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09" (2/3) ... [2022-11-23 15:38:10,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4ade10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:10, skipping insertion in model container [2022-11-23 15:38:10,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:10" (3/3) ... [2022-11-23 15:38:10,027 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal_v.c [2022-11-23 15:38:10,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:38:10,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:38:10,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:38:10,113 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;@3a767467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:38:10,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:38:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:38:10,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:10,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:38:10,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-23 15:38:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105802027] [2022-11-23 15:38:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:38:10,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:38:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:38:10,383 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:38:10,386 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:38:10,387 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:38:10,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:38:10,397 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:38:10,401 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:38:10,423 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 15:38:10,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:38:10 BoogieIcfgContainer [2022-11-23 15:38:10,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:38:10,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:38:10,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:38:10,436 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:38:10,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:10" (3/4) ... [2022-11-23 15:38:10,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:38:10,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:38:10,444 INFO L158 Benchmark]: Toolchain (without parser) took 1611.03ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 122.7MB in the beginning and 143.2MB in the end (delta: -20.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-23 15:38:10,445 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:38:10,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.89ms. Allocated memory is still 151.0MB. Free memory was 122.7MB in the beginning and 109.6MB in the end (delta: 13.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:38:10,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.61ms. Allocated memory is still 151.0MB. Free memory was 109.6MB in the beginning and 107.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:38:10,448 INFO L158 Benchmark]: Boogie Preprocessor took 53.52ms. Allocated memory is still 151.0MB. Free memory was 107.2MB in the beginning and 105.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:38:10,453 INFO L158 Benchmark]: RCFGBuilder took 746.90ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 58.8MB in the end (delta: 46.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-23 15:38:10,455 INFO L158 Benchmark]: TraceAbstraction took 418.19ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 58.0MB in the beginning and 143.2MB in the end (delta: -85.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:38:10,456 INFO L158 Benchmark]: Witness Printer took 7.60ms. Allocated memory is still 182.5MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:38:10,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.89ms. Allocated memory is still 151.0MB. Free memory was 122.7MB in the beginning and 109.6MB in the end (delta: 13.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.61ms. Allocated memory is still 151.0MB. Free memory was 109.6MB in the beginning and 107.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.52ms. Allocated memory is still 151.0MB. Free memory was 107.2MB in the beginning and 105.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 746.90ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 58.8MB in the end (delta: 46.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 418.19ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 58.0MB in the beginning and 143.2MB in the end (delta: -85.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.60ms. Allocated memory is still 182.5MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 60, overapproximation of bitwiseAnd at line 65. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_28 mask_SORT_28 = (SORT_28)-1 >> (sizeof(SORT_28) * 8 - 32); [L32] const SORT_28 msb_SORT_28 = (SORT_28)1 << (32 - 1); [L34] const SORT_4 var_5 = 1; [L35] const SORT_4 var_8 = 0; [L36] const SORT_1 var_15 = 1; [L37] const SORT_4 var_22 = 15; [L38] const SORT_28 var_30 = 1; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L43] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L44] SORT_4 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L46] SORT_4 init_7_arg_1 = var_5; [L47] state_6 = init_7_arg_1 [L48] SORT_4 init_10_arg_1 = var_8; [L49] state_9 = init_10_arg_1 VAL [init_10_arg_1=0, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_28=4294967295, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_28=2147483648, msb_SORT_4=8, state_6=1, state_9=0, var_15=1, var_22=15, var_30=1, var_5=1, var_8=0] [L52] input_2 = __VERIFIER_nondet_uchar() [L53] input_3 = __VERIFIER_nondet_uchar() [L56] SORT_4 var_11_arg_0 = state_6; [L57] SORT_4 var_11_arg_1 = state_9; [L58] SORT_1 var_11 = var_11_arg_0 < var_11_arg_1; [L59] SORT_1 var_12_arg_0 = var_11; [L60] SORT_1 var_12 = ~var_12_arg_0; [L61] SORT_1 var_16_arg_0 = var_12; [L62] SORT_1 var_16 = ~var_16_arg_0; [L63] SORT_1 var_17_arg_0 = var_15; [L64] SORT_1 var_17_arg_1 = var_16; [L65] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L66] var_17 = var_17 & mask_SORT_1 [L67] SORT_1 bad_18_arg_0 = var_17; [L68] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:38:10,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/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_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW --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 4f767659aef273937b209b166fb1e0efe89714175079fa1bd2cb01c19aa1ec81 --- 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-4e7fbc6 [2022-11-23 15:38:12,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:38:12,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:38:12,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:38:12,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:38:12,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:38:12,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:38:12,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:38:12,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:38:12,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:38:12,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:38:12,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:38:12,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:38:12,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:38:12,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:38:12,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:38:12,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:38:12,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:38:12,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:38:12,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:38:12,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:38:12,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:38:12,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:38:12,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:38:12,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:38:12,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:38:12,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:38:12,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:38:12,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:38:12,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:38:12,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:38:12,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:38:12,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:38:12,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:38:12,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:38:12,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:38:12,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:38:12,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:38:12,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:38:12,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:38:12,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:38:12,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 15:38:13,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:38:13,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:38:13,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:38:13,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:38:13,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:38:13,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:38:13,018 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:38:13,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:38:13,018 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:38:13,019 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:38:13,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:38:13,020 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:38:13,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:38:13,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:38:13,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:38:13,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:38:13,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:38:13,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:38:13,022 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:38:13,022 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:38:13,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:38:13,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:38:13,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:38:13,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:38:13,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:38:13,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:38:13,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:38:13,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:38:13,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:38:13,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:38:13,024 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:38:13,024 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:38:13,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:38:13,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:38:13,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:38:13,025 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_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f767659aef273937b209b166fb1e0efe89714175079fa1bd2cb01c19aa1ec81 [2022-11-23 15:38:13,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:38:13,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:38:13,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:38:13,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:38:13,445 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:38:13,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c [2022-11-23 15:38:16,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:38:16,877 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:38:16,878 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c [2022-11-23 15:38:16,885 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data/91c011537/167463e219a44aa388af544b6c407a96/FLAG9681c25d8 [2022-11-23 15:38:16,905 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/data/91c011537/167463e219a44aa388af544b6c407a96 [2022-11-23 15:38:16,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:38:16,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:38:16,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:38:16,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:38:16,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:38:16,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:16" (1/1) ... [2022-11-23 15:38:16,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471462b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:16, skipping insertion in model container [2022-11-23 15:38:16,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:16" (1/1) ... [2022-11-23 15:38:16,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:38:16,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:38:17,075 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_65c02e61-42ea-437a-a966-316eb903af0f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1107,1120] [2022-11-23 15:38:17,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:38:17,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:38:17,188 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_65c02e61-42ea-437a-a966-316eb903af0f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1107,1120] [2022-11-23 15:38:17,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:38:17,229 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:38:17,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17 WrapperNode [2022-11-23 15:38:17,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:38:17,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:38:17,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:38:17,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:38:17,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,336 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2022-11-23 15:38:17,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:38:17,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:38:17,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:38:17,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:38:17,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,380 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:38:17,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:38:17,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:38:17,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:38:17,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (1/1) ... [2022-11-23 15:38:17,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:38:17,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:38:17,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:38:17,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:38:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:38:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:38:17,608 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:38:17,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:38:17,868 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:38:17,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:38:17,876 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:38:17,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:17 BoogieIcfgContainer [2022-11-23 15:38:17,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:38:17,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:38:17,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:38:17,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:38:17,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:38:16" (1/3) ... [2022-11-23 15:38:17,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c136c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:17, skipping insertion in model container [2022-11-23 15:38:17,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:17" (2/3) ... [2022-11-23 15:38:17,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c136c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:17, skipping insertion in model container [2022-11-23 15:38:17,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:17" (3/3) ... [2022-11-23 15:38:17,901 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal_v.c [2022-11-23 15:38:17,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:38:17,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:38:17,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:38:17,974 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;@54f91132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:38:17,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:38:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:38:17,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:17,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:38:17,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 15:38:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:38:18,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241710105] [2022-11-23 15:38:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:18,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:38:18,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:38:18,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:38:18,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:38:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:18,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 15:38:18,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:18,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:38:18,355 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:38:18,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241710105] [2022-11-23 15:38:18,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241710105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:38:18,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:38:18,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:38:18,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269500696] [2022-11-23 15:38:18,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:38:18,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:38:18,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:38:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:38:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:38:18,410 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:18,481 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 15:38:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:38:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:38:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:18,491 INFO L225 Difference]: With dead ends: 20 [2022-11-23 15:38:18,491 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 15:38:18,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:38:18,497 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 [2022-11-23 15:38:18,498 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] [2022-11-23 15:38:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 15:38:18,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 15:38:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:38:18,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:38:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:18,529 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:38:18,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:38:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:38:18,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:18,530 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:38:18,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:38:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:38:18,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 15:38:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:38:18,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221696023] [2022-11-23 15:38:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:18,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:38:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:38:18,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:38:18,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:38:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:18,917 WARN L261 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-23 15:38:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:20,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:38:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:26,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:38:26,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221696023] [2022-11-23 15:38:26,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221696023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:38:26,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2116807021] [2022-11-23 15:38:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:26,251 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:38:26,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:38:26,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:38:26,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 15:38:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:26,490 WARN L261 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-23 15:38:26,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:27,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:38:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:31,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2116807021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:38:31,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771988052] [2022-11-23 15:38:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:31,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:38:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:38:31,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:38:31,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:38:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:32,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-23 15:38:32,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:32,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:38:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:35,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771988052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:38:35,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:38:35,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 13 [2022-11-23 15:38:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457585069] [2022-11-23 15:38:35,228 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:38:35,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 15:38:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:38:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 15:38:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:38:35,231 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:35,403 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 15:38:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:38:35,403 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 [2022-11-23 15:38:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:35,404 INFO L225 Difference]: With dead ends: 16 [2022-11-23 15:38:35,404 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 15:38:35,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:38:35,406 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:35,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:38:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 15:38:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 15:38:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 15:38:35,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 15:38:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:35,411 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 15:38:35,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:38:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 15:38:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:38:35,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:35,412 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 15:38:35,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:38:35,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:38:35,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:38:36,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:38:36,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:36,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 15:38:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:38:36,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242200858] [2022-11-23 15:38:36,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:38:36,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:38:36,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:38:36,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:38:36,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:38:36,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:38:36,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:38:36,167 WARN L261 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 165 conjunts are in the unsatisfiable core [2022-11-23 15:38:36,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:37,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:43,947 WARN L233 SmtUtils]: Spent 4.72m on a formula simplification. DAG size of input: 699 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:43:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:44,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:43:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242200858] [2022-11-23 15:43:44,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242200858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336052390] [2022-11-23 15:43:44,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:43:44,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:43:44,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:43:44,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:43:44,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 15:43:45,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:43:45,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:43:45,153 WARN L261 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 174 conjunts are in the unsatisfiable core [2022-11-23 15:43:45,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:46,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:48:48,801 WARN L233 SmtUtils]: Spent 4.81m on a formula simplification. DAG size of input: 523 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:48:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:49,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1336052390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:48:49,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986448318] [2022-11-23 15:48:49,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:48:49,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:49,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:49,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:49,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c02e61-42ea-437a-a966-316eb903af0f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:48:49,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:48:49,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:48:49,746 WARN L261 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 176 conjunts are in the unsatisfiable core [2022-11-23 15:48:49,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:51,969 INFO L328 TraceCheckSpWp]: Computing backward predicates...