./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS --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 cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b --- 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-8393723 [2022-11-19 08:36:36,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:36:36,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:36:36,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:36:36,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:36:36,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:36:36,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:36:36,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:36:36,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:36:36,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:36:36,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:36:36,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:36:36,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:36:36,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:36:36,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:36:36,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:36:36,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:36:36,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:36:36,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:36:36,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:36:36,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:36:36,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:36:36,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:36:36,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:36:36,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:36:36,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:36:36,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:36:36,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:36:36,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:36:36,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:36:36,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:36:36,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:36:36,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:36:36,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:36:36,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:36:36,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:36:36,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:36:36,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:36:36,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:36:36,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:36:36,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:36:36,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:36:36,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:36:36,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:36:36,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:36:36,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:36:36,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:36:36,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:36:36,216 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:36:36,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:36:36,217 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:36:36,217 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:36:36,218 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:36:36,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:36:36,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:36:36,219 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:36:36,219 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:36:36,219 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:36:36,219 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:36:36,219 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:36:36,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:36:36,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:36:36,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:36:36,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:36:36,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:36:36,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:36:36,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:36:36,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:36:36,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:36:36,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:36:36,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:36:36,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:36,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:36:36,224 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:36:36,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:36:36,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:36:36,225 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:36:36,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:36:36,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:36:36,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:36:36,225 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b [2022-11-19 08:36:36,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:36:36,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:36:36,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:36:36,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:36:36,534 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:36:36,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-19 08:36:36,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/8c67f63f1/6bd78eafcc314704b62fc7c74a61c41c/FLAG0e2439dab [2022-11-19 08:36:37,323 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:36:37,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-19 08:36:37,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/8c67f63f1/6bd78eafcc314704b62fc7c74a61c41c/FLAG0e2439dab [2022-11-19 08:36:37,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/8c67f63f1/6bd78eafcc314704b62fc7c74a61c41c [2022-11-19 08:36:37,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:36:37,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:36:37,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:37,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:36:37,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:36:37,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:37" (1/1) ... [2022-11-19 08:36:37,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27164593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:37, skipping insertion in model container [2022-11-19 08:36:37,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:37" (1/1) ... [2022-11-19 08:36:37,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:36:37,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:36:37,928 WARN L234 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-19 08:36:38,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:38,435 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:36:38,450 WARN L234 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-19 08:36:38,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:38,673 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:36:38,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38 WrapperNode [2022-11-19 08:36:38,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:38,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:38,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:36:38,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:36:38,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:38,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:38,946 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2873 [2022-11-19 08:36:38,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:38,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:36:38,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:36:38,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:36:38,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:38,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:36:39,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:36:39,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:36:39,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:36:39,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (1/1) ... [2022-11-19 08:36:39,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:39,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:36:39,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:36:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:36:39,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:36:39,924 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:36:39,927 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:36:42,478 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:36:58,387 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:36:58,388 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:36:58,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:58 BoogieIcfgContainer [2022-11-19 08:36:58,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:36:58,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:36:58,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:36:58,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:36:58,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:36:37" (1/3) ... [2022-11-19 08:36:58,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c34b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:58, skipping insertion in model container [2022-11-19 08:36:58,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:38" (2/3) ... [2022-11-19 08:36:58,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c34b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:58, skipping insertion in model container [2022-11-19 08:36:58,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:58" (3/3) ... [2022-11-19 08:36:58,404 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-19 08:36:58,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:36:58,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:36:58,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:36:58,534 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;@7124dcbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:36:58,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:36:58,539 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) [2022-11-19 08:36:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:36:58,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:58,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:36:58,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:58,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 60474610, now seen corresponding path program 1 times [2022-11-19 08:36:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:58,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282066174] [2022-11-19 08:36:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:36:58,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:36:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:36:59,088 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:36:59,090 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:36:59,092 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:36:59,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:36:59,100 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:36:59,105 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:36:59,151 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 08:36:59,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:36:59 BoogieIcfgContainer [2022-11-19 08:36:59,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:36:59,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:36:59,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:36:59,175 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:36:59,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:58" (3/4) ... [2022-11-19 08:36:59,180 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:36:59,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:36:59,183 INFO L158 Benchmark]: Toolchain (without parser) took 21682.73ms. Allocated memory was 140.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 102.4MB in the beginning and 905.7MB in the end (delta: -803.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-19 08:36:59,184 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:59,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1171.91ms. Allocated memory is still 140.5MB. Free memory was 102.1MB in the beginning and 64.7MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-19 08:36:59,187 INFO L158 Benchmark]: Boogie Procedure Inliner took 271.37ms. Allocated memory is still 140.5MB. Free memory was 64.0MB in the beginning and 99.1MB in the end (delta: -35.1MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2022-11-19 08:36:59,193 INFO L158 Benchmark]: Boogie Preprocessor took 265.23ms. Allocated memory was 140.5MB in the beginning and 213.9MB in the end (delta: 73.4MB). Free memory was 99.1MB in the beginning and 162.2MB in the end (delta: -63.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2022-11-19 08:36:59,194 INFO L158 Benchmark]: RCFGBuilder took 19177.93ms. Allocated memory was 213.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 162.2MB in the beginning and 945.5MB in the end (delta: -783.3MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-19 08:36:59,196 INFO L158 Benchmark]: TraceAbstraction took 778.97ms. Allocated memory is still 2.3GB. Free memory was 944.5MB in the beginning and 906.7MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-19 08:36:59,197 INFO L158 Benchmark]: Witness Printer took 6.05ms. Allocated memory is still 2.3GB. Free memory was 906.7MB in the beginning and 905.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:59,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1171.91ms. Allocated memory is still 140.5MB. Free memory was 102.1MB in the beginning and 64.7MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 271.37ms. Allocated memory is still 140.5MB. Free memory was 64.0MB in the beginning and 99.1MB in the end (delta: -35.1MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 265.23ms. Allocated memory was 140.5MB in the beginning and 213.9MB in the end (delta: 73.4MB). Free memory was 99.1MB in the beginning and 162.2MB in the end (delta: -63.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * RCFGBuilder took 19177.93ms. Allocated memory was 213.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 162.2MB in the beginning and 945.5MB in the end (delta: -783.3MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * TraceAbstraction took 778.97ms. Allocated memory is still 2.3GB. Free memory was 944.5MB in the beginning and 906.7MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 6.05ms. Allocated memory is still 2.3GB. Free memory was 906.7MB in the beginning and 905.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 183, overapproximation of bitwiseAnd at line 190. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 12); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (12 - 1); [L34] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 3); [L35] const SORT_45 msb_SORT_45 = (SORT_45)1 << (3 - 1); [L37] const SORT_87 mask_SORT_87 = (SORT_87)-1 >> (sizeof(SORT_87) * 8 - 17); [L38] const SORT_87 msb_SORT_87 = (SORT_87)1 << (17 - 1); [L40] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 5); [L41] const SORT_88 msb_SORT_88 = (SORT_88)1 << (5 - 1); [L43] const SORT_91 mask_SORT_91 = (SORT_91)-1 >> (sizeof(SORT_91) * 8 - 9); [L44] const SORT_91 msb_SORT_91 = (SORT_91)1 << (9 - 1); [L46] const SORT_93 mask_SORT_93 = (SORT_93)-1 >> (sizeof(SORT_93) * 8 - 10); [L47] const SORT_93 msb_SORT_93 = (SORT_93)1 << (10 - 1); [L49] const SORT_96 mask_SORT_96 = (SORT_96)-1 >> (sizeof(SORT_96) * 8 - 11); [L50] const SORT_96 msb_SORT_96 = (SORT_96)1 << (11 - 1); [L52] const SORT_101 mask_SORT_101 = (SORT_101)-1 >> (sizeof(SORT_101) * 8 - 13); [L53] const SORT_101 msb_SORT_101 = (SORT_101)1 << (13 - 1); [L55] const SORT_104 mask_SORT_104 = (SORT_104)-1 >> (sizeof(SORT_104) * 8 - 14); [L56] const SORT_104 msb_SORT_104 = (SORT_104)1 << (14 - 1); [L58] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 15); [L59] const SORT_107 msb_SORT_107 = (SORT_107)1 << (15 - 1); [L61] const SORT_140 mask_SORT_140 = (SORT_140)-1 >> (sizeof(SORT_140) * 8 - 7); [L62] const SORT_140 msb_SORT_140 = (SORT_140)1 << (7 - 1); [L64] const SORT_200 mask_SORT_200 = (SORT_200)-1 >> (sizeof(SORT_200) * 8 - 2); [L65] const SORT_200 msb_SORT_200 = (SORT_200)1 << (2 - 1); [L67] const SORT_359 mask_SORT_359 = (SORT_359)-1 >> (sizeof(SORT_359) * 8 - 4); [L68] const SORT_359 msb_SORT_359 = (SORT_359)1 << (4 - 1); [L70] const SORT_362 mask_SORT_362 = (SORT_362)-1 >> (sizeof(SORT_362) * 8 - 6); [L71] const SORT_362 msb_SORT_362 = (SORT_362)1 << (6 - 1); [L73] const SORT_365 mask_SORT_365 = (SORT_365)-1 >> (sizeof(SORT_365) * 8 - 8); [L74] const SORT_365 msb_SORT_365 = (SORT_365)1 << (8 - 1); [L76] const SORT_6 var_7 = 0; [L77] const SORT_1 var_19 = 1; [L78] const SORT_3 var_23 = 0; [L79] const SORT_1 var_30 = 0; [L80] const SORT_45 var_46 = 0; [L81] const SORT_45 var_50 = 2; [L82] const SORT_45 var_54 = 1; [L83] const SORT_45 var_59 = 4; [L84] const SORT_45 var_61 = 5; [L85] const SORT_45 var_65 = 3; [L86] const SORT_6 var_74 = 2; [L87] const SORT_88 var_89 = 0; [L88] const SORT_140 var_142 = 5; [L89] const SORT_140 var_146 = 4; [L90] const SORT_140 var_150 = 3; [L91] const SORT_140 var_154 = 2; [L92] const SORT_140 var_158 = 1; [L93] const SORT_140 var_162 = 0; [L94] const SORT_200 var_202 = 0; [L95] const SORT_3 var_209 = 65535; [L97] SORT_1 input_2; [L98] SORT_3 input_4; [L99] SORT_3 input_5; [L100] SORT_3 input_197; [L101] SORT_3 input_198; [L102] SORT_3 input_199; [L103] SORT_3 input_208; [L104] SORT_3 input_217; [L105] SORT_3 input_218; [L106] SORT_3 input_219; [L107] SORT_3 input_222; [L108] SORT_3 input_240; [L109] SORT_3 input_241; [L110] SORT_3 input_242; [L111] SORT_3 input_245; [L112] SORT_3 input_247; [L113] SORT_200 input_261; [L114] SORT_200 input_262; [L115] SORT_200 input_263; [L117] SORT_6 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L118] SORT_6 state_12 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L119] SORT_3 state_24 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L120] SORT_3 state_26 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_3 state_33 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] SORT_3 state_35 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L125] SORT_3 state_37 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L126] SORT_3 state_39 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] SORT_3 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_43 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L131] SORT_6 init_9_arg_1 = var_7; [L132] state_8 = init_9_arg_1 [L133] SORT_6 init_13_arg_1 = var_7; [L134] state_12 = init_13_arg_1 [L135] SORT_3 init_25_arg_1 = var_23; [L136] state_24 = init_25_arg_1 [L137] SORT_3 init_27_arg_1 = var_23; [L138] state_26 = init_27_arg_1 [L139] SORT_3 init_29_arg_1 = var_23; [L140] state_28 = init_29_arg_1 [L141] SORT_1 init_32_arg_1 = var_30; [L142] state_31 = init_32_arg_1 [L143] SORT_3 init_34_arg_1 = var_23; [L144] state_33 = init_34_arg_1 [L145] SORT_3 init_36_arg_1 = var_23; [L146] state_35 = init_36_arg_1 [L147] SORT_3 init_38_arg_1 = var_23; [L148] state_37 = init_38_arg_1 [L149] SORT_3 init_40_arg_1 = var_23; [L150] state_39 = init_40_arg_1 [L151] SORT_3 init_42_arg_1 = var_23; [L152] state_41 = init_42_arg_1 [L153] SORT_3 init_44_arg_1 = var_23; [L154] state_43 = init_44_arg_1 [L155] SORT_45 init_48_arg_1 = var_46; [L156] state_47 = init_48_arg_1 VAL [init_13_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_48_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_101=8191, mask_SORT_104=16383, mask_SORT_107=32767, mask_SORT_140=127, mask_SORT_200=3, mask_SORT_3=65535, mask_SORT_359=15, mask_SORT_362=63, mask_SORT_365=255, mask_SORT_45=7, mask_SORT_6=4095, mask_SORT_87=4294967295, mask_SORT_88=31, mask_SORT_91=511, mask_SORT_93=1023, mask_SORT_96=2047, msb_SORT_1=1, msb_SORT_101=4096, msb_SORT_104=8192, msb_SORT_107=16384, msb_SORT_140=64, msb_SORT_200=2, msb_SORT_3=32768, msb_SORT_359=8, msb_SORT_362=32, msb_SORT_365=128, msb_SORT_45=4, msb_SORT_6=2048, msb_SORT_87=65536, msb_SORT_88=16, msb_SORT_91=256, msb_SORT_93=512, msb_SORT_96=1024, state_12=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_47=0, state_8=0, var_142=5, var_146=4, var_150=3, var_154=2, var_158=1, var_162=0, var_19=1, var_202=0, var_209=65535, var_23=0, var_30=0, var_46=0, var_50=2, var_54=1, var_59=4, var_61=5, var_65=3, var_7=0, var_74=2, var_89=0] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_4 = __VERIFIER_nondet_ushort() [L161] input_5 = __VERIFIER_nondet_ushort() [L162] input_197 = __VERIFIER_nondet_ushort() [L163] input_198 = __VERIFIER_nondet_ushort() [L164] input_199 = __VERIFIER_nondet_ushort() [L165] input_208 = __VERIFIER_nondet_ushort() [L166] input_217 = __VERIFIER_nondet_ushort() [L167] input_218 = __VERIFIER_nondet_ushort() [L168] input_219 = __VERIFIER_nondet_ushort() [L169] input_222 = __VERIFIER_nondet_ushort() [L170] input_240 = __VERIFIER_nondet_ushort() [L171] input_241 = __VERIFIER_nondet_ushort() [L172] input_242 = __VERIFIER_nondet_ushort() [L173] input_245 = __VERIFIER_nondet_ushort() [L174] input_247 = __VERIFIER_nondet_ushort() [L175] input_261 = __VERIFIER_nondet_uchar() [L176] input_262 = __VERIFIER_nondet_uchar() [L177] input_263 = __VERIFIER_nondet_uchar() [L180] SORT_6 var_10_arg_0 = state_8; [L181] SORT_1 var_10 = var_10_arg_0 >> 0; [L182] SORT_1 var_11_arg_0 = var_10; [L183] SORT_1 var_11 = ~var_11_arg_0; [L184] SORT_6 var_14_arg_0 = state_12; [L185] SORT_1 var_14 = var_14_arg_0 >> 0; [L186] SORT_1 var_15_arg_0 = var_14; [L187] SORT_1 var_15 = ~var_15_arg_0; [L188] SORT_1 var_16_arg_0 = var_11; [L189] SORT_1 var_16_arg_1 = var_15; [L190] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L191] SORT_1 var_20_arg_0 = var_16; [L192] SORT_1 var_20 = ~var_20_arg_0; [L193] SORT_1 var_21_arg_0 = var_19; [L194] SORT_1 var_21_arg_1 = var_20; [L195] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L196] var_21 = var_21 & mask_SORT_1 [L197] SORT_1 bad_22_arg_0 = var_21; [L198] CALL __VERIFIER_assert(!(bad_22_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 08:36:59,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS --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 cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b --- 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-8393723 [2022-11-19 08:37:02,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:37:02,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:37:02,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:37:02,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:37:02,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:37:02,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:37:02,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:37:02,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:37:02,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:37:02,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:37:02,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:37:02,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:37:02,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:37:02,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:37:02,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:37:02,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:37:02,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:37:02,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:37:02,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:37:02,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:37:02,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:37:02,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:37:02,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:37:02,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:37:02,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:37:02,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:37:02,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:37:02,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:37:02,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:37:02,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:37:02,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:37:02,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:37:02,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:37:02,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:37:02,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:37:02,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:37:02,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:37:02,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:37:02,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:37:02,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:37:02,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:37:02,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:37:02,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:37:02,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:37:02,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:37:02,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:37:02,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:37:02,297 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:37:02,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:37:02,297 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:37:02,298 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:37:02,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:37:02,299 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:37:02,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:37:02,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:37:02,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:37:02,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:37:02,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:37:02,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:37:02,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:37:02,303 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:37:02,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:37:02,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:37:02,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:37:02,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:37:02,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:37:02,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:37:02,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:37:02,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:37:02,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:37:02,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:37:02,305 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:37:02,305 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:37:02,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:37:02,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:37:02,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:37:02,306 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b [2022-11-19 08:37:02,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:37:02,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:37:02,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:37:02,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:37:02,823 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:37:02,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-19 08:37:02,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/44135d0df/13914f299de04029b5f5fe8a3fb54376/FLAG9ff039151 [2022-11-19 08:37:03,633 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:37:03,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-19 08:37:03,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/44135d0df/13914f299de04029b5f5fe8a3fb54376/FLAG9ff039151 [2022-11-19 08:37:03,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/data/44135d0df/13914f299de04029b5f5fe8a3fb54376 [2022-11-19 08:37:03,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:37:03,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:37:03,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:37:03,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:37:03,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:37:03,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:37:03" (1/1) ... [2022-11-19 08:37:03,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee15b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:03, skipping insertion in model container [2022-11-19 08:37:03,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:37:03" (1/1) ... [2022-11-19 08:37:03,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:37:03,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:37:04,178 WARN L234 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-19 08:37:04,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:37:04,729 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:37:04,744 WARN L234 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_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-19 08:37:04,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:37:04,904 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:37:04,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04 WrapperNode [2022-11-19 08:37:04,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:37:04,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:37:04,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:37:04,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:37:04,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:04,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,108 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1774 [2022-11-19 08:37:05,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:37:05,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:37:05,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:37:05,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:37:05,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:37:05,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:37:05,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:37:05,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:37:05,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (1/1) ... [2022-11-19 08:37:05,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:37:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:37:05,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:37:05,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:37:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:37:05,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:37:06,035 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:37:06,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:37:09,718 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:37:09,729 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:37:09,729 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:37:09,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:37:09 BoogieIcfgContainer [2022-11-19 08:37:09,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:37:09,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:37:09,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:37:09,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:37:09,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:37:03" (1/3) ... [2022-11-19 08:37:09,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb50b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:37:09, skipping insertion in model container [2022-11-19 08:37:09,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:04" (2/3) ... [2022-11-19 08:37:09,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb50b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:37:09, skipping insertion in model container [2022-11-19 08:37:09,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:37:09" (3/3) ... [2022-11-19 08:37:09,743 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-19 08:37:09,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:37:09,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:37:09,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:37:09,858 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;@679c1ead, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:37:09,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:37:09,863 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) [2022-11-19 08:37:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:37:09,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:09,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:37:09,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 08:37:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790780678] [2022-11-19 08:37:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:09,890 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 [2022-11-19 08:37:09,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:09,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:37:09,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:37:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:10,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 08:37:10,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:10,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:37:10,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:37:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790780678] [2022-11-19 08:37:10,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790780678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:10,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:10,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:37:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217795126] [2022-11-19 08:37:10,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:10,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:37:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:37:10,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:37:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:37:10,680 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) [2022-11-19 08:37:11,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:11,031 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 08:37:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:37:11,034 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 [2022-11-19 08:37:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:11,045 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:37:11,048 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 08:37:11,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:11,057 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:11,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:37:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 08:37:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 08:37:11,089 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) [2022-11-19 08:37:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:37:11,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:37:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:11,092 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:37:11,092 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) [2022-11-19 08:37:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:37:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:37:11,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:11,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:11,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:37:11,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:37:11,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 08:37:11,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:11,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242094922] [2022-11-19 08:37:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:11,313 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 [2022-11-19 08:37:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:11,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:37:11,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:37:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:12,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 08:37:12,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:12,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:37:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:13,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:37:13,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242094922] [2022-11-19 08:37:13,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242094922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:37:13,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [201686877] [2022-11-19 08:37:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:13,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:37:13,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:37:13,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:37:13,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:37:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:15,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-19 08:37:15,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:16,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:37:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:21,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [201686877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:37:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182782271] [2022-11-19 08:37:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:21,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:37:21,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:37:21,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:37:21,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:37:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:22,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-19 08:37:22,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:22,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:37:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:30,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182782271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:37:30,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:37:30,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-11-19 08:37:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868403948] [2022-11-19 08:37:30,817 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:37:30,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 08:37:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:37:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 08:37:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=126, Unknown=5, NotChecked=0, Total=182 [2022-11-19 08:37:30,822 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2022-11-19 08:37:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:31,283 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 08:37:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:37:31,284 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 [2022-11-19 08:37:31,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:31,285 INFO L225 Difference]: With dead ends: 16 [2022-11-19 08:37:31,285 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 08:37:31,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=91, Invalid=210, Unknown=5, NotChecked=0, Total=306 [2022-11-19 08:37:31,287 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:31,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-19 08:37:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 08:37:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 08:37:31,293 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) [2022-11-19 08:37:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 08:37:31,294 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 08:37:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:31,294 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 08:37:31,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2022-11-19 08:37:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 08:37:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:37:31,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:31,296 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:37:31,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:37:31,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:31,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 08:37:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:37:31,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 08:37:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:31,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610918064] [2022-11-19 08:37:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:37:31,916 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 [2022-11-19 08:37:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:31,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:37:31,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:37:33,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:37:33,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:37:33,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-19 08:37:33,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:34,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:38:00,874 WARN L233 SmtUtils]: Spent 24.93s on a formula simplification. DAG size of input: 271 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:38:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:38:01,106 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:38:01,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610918064] [2022-11-19 08:38:01,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610918064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:38:01,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1851587617] [2022-11-19 08:38:01,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:38:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:38:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:38:01,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:38:01,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 08:38:04,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:38:04,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:38:04,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-19 08:38:04,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:38:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:38:04,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:38:45,726 WARN L233 SmtUtils]: Spent 30.85s on a formula simplification. DAG size of input: 271 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:38:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:38:45,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1851587617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:38:45,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849855834] [2022-11-19 08:38:45,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:38:45,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:38:45,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:38:46,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:38:46,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:38:47,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:38:47,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:38:47,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-19 08:38:47,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:38:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:38:48,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:39:14,289 WARN L233 SmtUtils]: Spent 13.93s on a formula simplification. DAG size of input: 130 DAG size of output: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:40:01,596 WARN L233 SmtUtils]: Spent 34.95s on a formula simplification. DAG size of input: 164 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:40:22,678 WARN L233 SmtUtils]: Spent 18.78s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:40:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:40:22,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849855834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:40:22,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:40:22,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 24 [2022-11-19 08:40:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832353092] [2022-11-19 08:40:22,799 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:40:22,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 08:40:22,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:40:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 08:40:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=455, Unknown=15, NotChecked=0, Total=552 [2022-11-19 08:40:22,802 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2022-11-19 08:40:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:40:24,107 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-19 08:40:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:40:24,108 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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 11 [2022-11-19 08:40:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:40:24,110 INFO L225 Difference]: With dead ends: 19 [2022-11-19 08:40:24,110 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:40:24,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 160.1s TimeCoverageRelationStatistics Valid=140, Invalid=657, Unknown=15, NotChecked=0, Total=812 [2022-11-19 08:40:24,113 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:40:24,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 46 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 73 Unchecked, 0.9s Time] [2022-11-19 08:40:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:40:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-19 08:40:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:40:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 08:40:24,119 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 08:40:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:40:24,119 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 08:40:24,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2022-11-19 08:40:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 08:40:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:40:24,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:40:24,121 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 08:40:24,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:40:24,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:40:24,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:40:24,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:40:24,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:40:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:40:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 08:40:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:40:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774175195] [2022-11-19 08:40:24,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:40:24,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:40:24,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:40:24,748 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:40:24,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aae7aa2a-4cf0-4d96-9e7a-e86c3dbcb548/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 08:40:26,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 08:40:26,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:40:26,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 178 conjunts are in the unsatisfiable core [2022-11-19 08:40:26,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:40:40,703 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 328 DAG size of output: 230 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:40:48,342 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 255 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:40:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:40:50,575 INFO L328 TraceCheckSpWp]: Computing backward predicates...