./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba --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 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb --- 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-b5237d8 [2022-11-22 02:08:55,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:08:55,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:08:55,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:08:55,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:08:55,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:08:55,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:08:55,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:08:55,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:08:55,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:08:55,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:08:55,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:08:55,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:08:55,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:08:55,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:08:55,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:08:55,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:08:55,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:08:55,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:08:55,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:08:55,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:08:55,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:08:55,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:08:55,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:08:55,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:08:55,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:08:55,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:08:55,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:08:55,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:08:55,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:08:55,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:08:55,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:08:55,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:08:55,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:08:55,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:08:55,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:08:55,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:08:55,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:08:55,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:08:55,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:08:55,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:08:55,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:08:55,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:08:55,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:08:55,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:08:55,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:08:55,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:08:55,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:08:55,429 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:08:55,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:08:55,429 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:08:55,429 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:08:55,430 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:08:55,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:08:55,430 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:08:55,430 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:08:55,430 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:08:55,430 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:08:55,431 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:08:55,431 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:08:55,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:08:55,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:08:55,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:08:55,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:08:55,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:08:55,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:08:55,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:08:55,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:08:55,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:08:55,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:08:55,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:08:55,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:55,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:08:55,434 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:08:55,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:08:55,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:08:55,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:08:55,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:08:55,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:08:55,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:08:55,435 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_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb [2022-11-22 02:08:55,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:08:55,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:08:55,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:08:55,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:08:55,697 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:08:55,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-22 02:08:58,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:08:59,110 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:08:59,111 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-22 02:08:59,128 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data/acdf3b3fd/7ce2c741000b4392acd43715c9ca985e/FLAG988ca6cba [2022-11-22 02:08:59,151 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data/acdf3b3fd/7ce2c741000b4392acd43715c9ca985e [2022-11-22 02:08:59,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:08:59,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:08:59,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:59,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:08:59,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:08:59,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:59" (1/1) ... [2022-11-22 02:08:59,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c48c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:59, skipping insertion in model container [2022-11-22 02:08:59,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:59" (1/1) ... [2022-11-22 02:08:59,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:08:59,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:08:59,451 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-22 02:08:59,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:59,812 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:08:59,824 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-22 02:09:00,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:09:00,032 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:09:00,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00 WrapperNode [2022-11-22 02:09:00,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:09:00,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:09:00,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:09:00,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:09:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,297 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1446 [2022-11-22 02:09:00,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:09:00,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:09:00,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:09:00,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:09:00,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:09:00,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:09:00,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:09:00,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:09:00,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (1/1) ... [2022-11-22 02:09:00,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:09:00,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:09:00,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:09:00,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:09:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:09:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:09:00,957 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:09:00,959 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:11:28,909 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:11:28,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:11:28,937 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:11:28,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:28 BoogieIcfgContainer [2022-11-22 02:11:28,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:11:28,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:11:28,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:11:28,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:11:28,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:08:59" (1/3) ... [2022-11-22 02:11:28,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b76b56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:28, skipping insertion in model container [2022-11-22 02:11:28,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:00" (2/3) ... [2022-11-22 02:11:28,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b76b56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:28, skipping insertion in model container [2022-11-22 02:11:28,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:28" (3/3) ... [2022-11-22 02:11:28,948 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-22 02:11:28,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:11:28,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:11:29,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:29,024 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;@3f7d1fce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:29,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:11:29,032 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) [2022-11-22 02:11:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:11:29,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:29,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:11:29,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 02:11:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:29,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941086074] [2022-11-22 02:11:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:29,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:11:29,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:11:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:11:29,648 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:11:29,650 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:11:29,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:11:29,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:11:29,658 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 02:11:29,663 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:11:29,697 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:11:29,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:11:29 BoogieIcfgContainer [2022-11-22 02:11:29,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:11:29,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:11:29,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:11:29,717 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:11:29,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:28" (3/4) ... [2022-11-22 02:11:29,724 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:11:29,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:11:29,727 INFO L158 Benchmark]: Toolchain (without parser) took 150567.56ms. Allocated memory was 159.4MB in the beginning and 853.5MB in the end (delta: 694.2MB). Free memory was 121.4MB in the beginning and 538.1MB in the end (delta: -416.8MB). Peak memory consumption was 279.0MB. Max. memory is 16.1GB. [2022-11-22 02:11:29,727 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:11:29,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 869.46ms. Allocated memory is still 159.4MB. Free memory was 120.8MB in the beginning and 73.1MB in the end (delta: 47.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-22 02:11:29,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 264.47ms. Allocated memory was 159.4MB in the beginning and 222.3MB in the end (delta: 62.9MB). Free memory was 73.1MB in the beginning and 180.2MB in the end (delta: -107.1MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2022-11-22 02:11:29,735 INFO L158 Benchmark]: Boogie Preprocessor took 183.73ms. Allocated memory is still 222.3MB. Free memory was 180.2MB in the beginning and 171.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:11:29,736 INFO L158 Benchmark]: RCFGBuilder took 148457.09ms. Allocated memory was 222.3MB in the beginning and 853.5MB in the end (delta: 631.2MB). Free memory was 170.8MB in the beginning and 586.4MB in the end (delta: -415.6MB). Peak memory consumption was 513.4MB. Max. memory is 16.1GB. [2022-11-22 02:11:29,738 INFO L158 Benchmark]: TraceAbstraction took 772.64ms. Allocated memory is still 853.5MB. Free memory was 586.4MB in the beginning and 538.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-22 02:11:29,738 INFO L158 Benchmark]: Witness Printer took 9.01ms. Allocated memory is still 853.5MB. Free memory was 538.1MB in the beginning and 538.1MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:11:29,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 869.46ms. Allocated memory is still 159.4MB. Free memory was 120.8MB in the beginning and 73.1MB in the end (delta: 47.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 264.47ms. Allocated memory was 159.4MB in the beginning and 222.3MB in the end (delta: 62.9MB). Free memory was 73.1MB in the beginning and 180.2MB in the end (delta: -107.1MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 183.73ms. Allocated memory is still 222.3MB. Free memory was 180.2MB in the beginning and 171.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 148457.09ms. Allocated memory was 222.3MB in the beginning and 853.5MB in the end (delta: 631.2MB). Free memory was 170.8MB in the beginning and 586.4MB in the end (delta: -415.6MB). Peak memory consumption was 513.4MB. Max. memory is 16.1GB. * TraceAbstraction took 772.64ms. Allocated memory is still 853.5MB. Free memory was 586.4MB in the beginning and 538.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 9.01ms. Allocated memory is still 853.5MB. Free memory was 538.1MB in the beginning and 538.1MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 221, overapproximation of bitwiseAnd at line 149. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_16 = 0; [L39] const SORT_4 var_53 = 1; [L40] const SORT_4 var_54 = 0; [L41] const SORT_2 var_66 = 0; [L42] const SORT_2 var_68 = 4; [L43] const SORT_2 var_71 = 3; [L44] const SORT_2 var_74 = 2; [L45] const SORT_2 var_77 = 1; [L46] const SORT_2 var_87 = 255; [L47] const SORT_3 var_91 = 0; [L48] const SORT_4 var_95 = 255; [L50] SORT_1 input_65; [L51] SORT_1 input_67; [L52] SORT_1 input_69; [L53] SORT_1 input_70; [L54] SORT_1 input_72; [L55] SORT_1 input_73; [L56] SORT_1 input_75; [L57] SORT_1 input_76; [L58] SORT_1 input_88; [L59] SORT_1 input_89; [L60] SORT_1 input_90; [L61] SORT_1 input_107; [L62] SORT_1 input_108; [L63] SORT_1 input_123; [L64] SORT_1 input_124; [L65] SORT_1 input_139; [L66] SORT_1 input_140; [L67] SORT_1 input_157; [L68] SORT_1 input_165; [L69] SORT_1 input_173; [L70] SORT_1 input_181; [L71] SORT_1 input_189; [L72] SORT_1 input_197; [L73] SORT_1 input_205; [L74] SORT_1 input_213; [L76] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_2 init_7_arg_1 = var_5; [L101] state_6 = init_7_arg_1 [L102] SORT_2 init_9_arg_1 = var_5; [L103] state_8 = init_9_arg_1 [L104] SORT_2 init_11_arg_1 = var_5; [L105] state_10 = init_11_arg_1 [L106] SORT_2 init_13_arg_1 = var_5; [L107] state_12 = init_13_arg_1 [L108] SORT_2 init_15_arg_1 = var_5; [L109] state_14 = init_15_arg_1 [L110] SORT_1 init_18_arg_1 = var_16; [L111] state_17 = init_18_arg_1 [L112] SORT_1 init_20_arg_1 = var_16; [L113] state_19 = init_20_arg_1 [L114] SORT_1 init_22_arg_1 = var_16; [L115] state_21 = init_22_arg_1 [L116] SORT_1 init_24_arg_1 = var_16; [L117] state_23 = init_24_arg_1 [L118] SORT_1 init_26_arg_1 = var_16; [L119] state_25 = init_26_arg_1 [L120] SORT_1 init_28_arg_1 = var_16; [L121] state_27 = init_28_arg_1 [L122] SORT_1 init_30_arg_1 = var_16; [L123] state_29 = init_30_arg_1 [L124] SORT_1 init_32_arg_1 = var_16; [L125] state_31 = init_32_arg_1 [L126] SORT_1 init_34_arg_1 = var_16; [L127] state_33 = init_34_arg_1 [L128] SORT_1 init_36_arg_1 = var_16; [L129] state_35 = init_36_arg_1 [L130] SORT_1 init_38_arg_1 = var_16; [L131] state_37 = init_38_arg_1 [L132] SORT_1 init_40_arg_1 = var_16; [L133] state_39 = init_40_arg_1 [L134] SORT_1 init_42_arg_1 = var_16; [L135] state_41 = init_42_arg_1 [L136] SORT_1 init_44_arg_1 = var_16; [L137] state_43 = init_44_arg_1 [L138] SORT_1 init_46_arg_1 = var_16; [L139] state_45 = init_46_arg_1 [L140] SORT_1 init_48_arg_1 = var_16; [L141] state_47 = init_48_arg_1 [L142] SORT_1 init_50_arg_1 = var_16; [L143] state_49 = init_50_arg_1 [L144] SORT_1 init_52_arg_1 = var_16; [L145] state_51 = init_52_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_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_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_6=0, state_8=0, var_16=0, var_5=0, var_53=1, var_54=0, var_66=0, var_68=4, var_71=3, var_74=2, var_77=1, var_87=255, var_91=0, var_95=255] [L148] input_65 = __VERIFIER_nondet_uchar() [L149] input_65 = input_65 & mask_SORT_1 [L150] input_67 = __VERIFIER_nondet_uchar() [L151] input_67 = input_67 & mask_SORT_1 [L152] input_69 = __VERIFIER_nondet_uchar() [L153] input_69 = input_69 & mask_SORT_1 [L154] input_70 = __VERIFIER_nondet_uchar() [L155] input_70 = input_70 & mask_SORT_1 [L156] input_72 = __VERIFIER_nondet_uchar() [L157] input_72 = input_72 & mask_SORT_1 [L158] input_73 = __VERIFIER_nondet_uchar() [L159] input_73 = input_73 & mask_SORT_1 [L160] input_75 = __VERIFIER_nondet_uchar() [L161] input_75 = input_75 & mask_SORT_1 [L162] input_76 = __VERIFIER_nondet_uchar() [L163] input_76 = input_76 & mask_SORT_1 [L164] input_88 = __VERIFIER_nondet_uchar() [L165] input_88 = input_88 & mask_SORT_1 [L166] input_89 = __VERIFIER_nondet_uchar() [L167] input_89 = input_89 & mask_SORT_1 [L168] input_90 = __VERIFIER_nondet_uchar() [L169] input_90 = input_90 & mask_SORT_1 [L170] input_107 = __VERIFIER_nondet_uchar() [L171] input_107 = input_107 & mask_SORT_1 [L172] input_108 = __VERIFIER_nondet_uchar() [L173] input_108 = input_108 & mask_SORT_1 [L174] input_123 = __VERIFIER_nondet_uchar() [L175] input_123 = input_123 & mask_SORT_1 [L176] input_124 = __VERIFIER_nondet_uchar() [L177] input_124 = input_124 & mask_SORT_1 [L178] input_139 = __VERIFIER_nondet_uchar() [L179] input_139 = input_139 & mask_SORT_1 [L180] input_140 = __VERIFIER_nondet_uchar() [L181] input_140 = input_140 & mask_SORT_1 [L182] input_157 = __VERIFIER_nondet_uchar() [L183] input_165 = __VERIFIER_nondet_uchar() [L184] input_173 = __VERIFIER_nondet_uchar() [L185] input_181 = __VERIFIER_nondet_uchar() [L186] input_189 = __VERIFIER_nondet_uchar() [L187] input_197 = __VERIFIER_nondet_uchar() [L188] input_205 = __VERIFIER_nondet_uchar() [L189] input_213 = __VERIFIER_nondet_uchar() [L192] SORT_1 var_55_arg_0 = state_25; [L193] SORT_4 var_55_arg_1 = var_53; [L194] SORT_4 var_55_arg_2 = var_54; [L195] SORT_4 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L196] SORT_1 var_56_arg_0 = state_33; [L197] SORT_4 var_56_arg_1 = var_53; [L198] SORT_4 var_56_arg_2 = var_54; [L199] SORT_4 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L200] SORT_4 var_57_arg_0 = var_55; [L201] SORT_4 var_57_arg_1 = var_56; [L202] SORT_4 var_57 = var_57_arg_0 + var_57_arg_1; [L203] SORT_1 var_58_arg_0 = state_41; [L204] SORT_4 var_58_arg_1 = var_53; [L205] SORT_4 var_58_arg_2 = var_54; [L206] SORT_4 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L207] SORT_4 var_59_arg_0 = var_57; [L208] SORT_4 var_59_arg_1 = var_58; [L209] SORT_4 var_59 = var_59_arg_0 + var_59_arg_1; [L210] SORT_1 var_60_arg_0 = state_49; [L211] SORT_4 var_60_arg_1 = var_53; [L212] SORT_4 var_60_arg_2 = var_54; [L213] SORT_4 var_60 = var_60_arg_0 ? var_60_arg_1 : var_60_arg_2; [L214] SORT_4 var_61_arg_0 = var_59; [L215] SORT_4 var_61_arg_1 = var_60; [L216] SORT_4 var_61 = var_61_arg_0 + var_61_arg_1; [L217] var_61 = var_61 & mask_SORT_4 [L218] SORT_4 var_62_arg_0 = var_61; [L219] SORT_4 var_62_arg_1 = var_53; [L220] SORT_1 var_62 = var_62_arg_0 <= var_62_arg_1; [L221] SORT_1 var_63_arg_0 = ~state_51; [L222] var_63_arg_0 = var_63_arg_0 & mask_SORT_1 [L223] SORT_1 var_63_arg_1 = ~var_62; [L224] var_63_arg_1 = var_63_arg_1 & mask_SORT_1 [L225] SORT_1 var_63 = var_63_arg_0 & var_63_arg_1; [L226] var_63 = var_63 & mask_SORT_1 [L227] SORT_1 bad_64_arg_0 = var_63; [L228] CALL __VERIFIER_assert(!(bad_64_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: 0.7s, 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 [2022-11-22 02:11:29,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba --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 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb --- 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-b5237d8 [2022-11-22 02:11:32,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:11:32,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:11:32,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:11:32,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:11:32,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:11:32,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:11:32,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:11:32,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:11:32,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:11:32,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:11:32,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:11:32,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:11:32,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:11:32,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:11:32,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:11:32,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:11:32,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:11:32,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:11:32,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:11:32,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:11:32,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:11:32,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:11:32,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:11:32,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:11:32,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:11:32,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:11:32,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:11:32,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:11:32,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:11:32,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:11:32,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:11:32,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:11:32,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:11:32,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:11:32,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:11:32,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:11:32,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:11:32,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:11:32,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:11:32,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:11:32,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 02:11:32,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:11:32,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:11:32,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:11:32,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:11:32,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:11:32,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:11:32,349 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:11:32,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:11:32,349 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:11:32,350 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:11:32,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:11:32,350 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:11:32,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:11:32,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:11:32,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:11:32,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:11:32,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:11:32,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:11:32,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:11:32,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:11:32,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:11:32,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:11:32,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:11:32,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:11:32,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:11:32,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:11:32,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:32,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:11:32,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:11:32,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:11:32,356 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:11:32,356 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:11:32,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:11:32,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:11:32,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:11:32,358 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_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb [2022-11-22 02:11:32,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:11:32,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:11:32,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:11:32,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:11:32,712 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:11:32,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-22 02:11:35,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:11:36,246 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:11:36,249 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-22 02:11:36,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data/79ea3aeaf/b68779ee4e61405eb92b523dc247dca6/FLAGc3d3b5224 [2022-11-22 02:11:36,297 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/data/79ea3aeaf/b68779ee4e61405eb92b523dc247dca6 [2022-11-22 02:11:36,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:11:36,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:11:36,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:36,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:11:36,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:11:36,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:36" (1/1) ... [2022-11-22 02:11:36,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25478d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:36, skipping insertion in model container [2022-11-22 02:11:36,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:36" (1/1) ... [2022-11-22 02:11:36,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:11:36,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:11:36,584 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-22 02:11:36,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:36,916 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:11:36,927 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-22 02:11:37,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:37,041 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:11:37,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37 WrapperNode [2022-11-22 02:11:37,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:37,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:37,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:11:37,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:11:37,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,186 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1446 [2022-11-22 02:11:37,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:37,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:11:37,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:11:37,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:11:37,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:11:37,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:11:37,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:11:37,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:11:37,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (1/1) ... [2022-11-22 02:11:37,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:37,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:37,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:11:37,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:11:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:11:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:11:37,813 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:11:37,820 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:11:40,154 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:11:40,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:11:40,161 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:11:40,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:40 BoogieIcfgContainer [2022-11-22 02:11:40,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:11:40,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:11:40,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:11:40,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:11:40,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:11:36" (1/3) ... [2022-11-22 02:11:40,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145acfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:40, skipping insertion in model container [2022-11-22 02:11:40,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:37" (2/3) ... [2022-11-22 02:11:40,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145acfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:40, skipping insertion in model container [2022-11-22 02:11:40,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:40" (3/3) ... [2022-11-22 02:11:40,172 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-22 02:11:40,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:11:40,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:11:40,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:40,256 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;@36e376fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:40,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:11:40,261 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) [2022-11-22 02:11:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:11:40,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:40,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:11:40,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 02:11:40,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:40,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803197166] [2022-11-22 02:11:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:40,284 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 [2022-11-22 02:11:40,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:40,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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) [2022-11-22 02:11:40,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:11:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-22 02:11:40,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:41,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:41,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:41,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803197166] [2022-11-22 02:11:41,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803197166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:41,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:41,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:11:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574465230] [2022-11-22 02:11:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:11:41,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:11:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:11:41,300 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) [2022-11-22 02:11:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:41,619 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 02:11:41,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:11:41,621 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 [2022-11-22 02:11:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:41,628 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:11:41,629 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 02:11:41,633 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 [2022-11-22 02:11:41,639 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-22 02:11:41,641 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] [2022-11-22 02:11:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 02:11:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 02:11:41,669 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) [2022-11-22 02:11:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 02:11:41,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 02:11:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:41,672 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 02:11:41,672 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) [2022-11-22 02:11:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 02:11:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:11:41,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:41,673 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:41,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:11:41,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:11:41,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:41,896 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 02:11:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:41,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300842252] [2022-11-22 02:11:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:41,901 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 [2022-11-22 02:11:41,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:41,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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) [2022-11-22 02:11:41,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:11:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:42,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 154 conjunts are in the unsatisfiable core [2022-11-22 02:11:42,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:45,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:12:16,700 WARN L233 SmtUtils]: Spent 27.18s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:12:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:17,734 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:12:17,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300842252] [2022-11-22 02:12:17,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300842252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:12:17,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [516050431] [2022-11-22 02:12:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:17,735 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:12:17,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:12:17,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:12:17,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 02:12:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:19,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-22 02:12:19,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:21,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:17:35,594 WARN L233 SmtUtils]: Spent 5.15m on a formula simplification. DAG size of input: 210 DAG size of output: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:22,845 WARN L233 SmtUtils]: Spent 2.52m on a formula simplification that was a NOOP. DAG size: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:20:26,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [516050431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:20:26,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642771351] [2022-11-22 02:20:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:26,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:26,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:26,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e1fadb-decc-4fea-80bb-618aa4d6dcb9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:20:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:27,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 159 conjunts are in the unsatisfiable core [2022-11-22 02:20:27,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:20:29,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:30,211 WARN L233 SmtUtils]: Spent 2.56m on a formula simplification that was a NOOP. DAG size: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)