./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 --- 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 07:15:10,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:15:10,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:15:10,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:15:10,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:15:10,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:15:10,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:15:10,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:15:10,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:15:10,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:15:10,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:15:10,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:15:10,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:15:10,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:15:10,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:15:10,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:15:10,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:15:10,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:15:10,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:15:10,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:15:10,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:15:10,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:15:10,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:15:10,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:15:10,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:15:10,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:15:10,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:15:10,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:15:10,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:15:10,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:15:10,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:15:10,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:15:10,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:15:10,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:15:10,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:15:10,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:15:10,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:15:10,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:15:10,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:15:10,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:15:10,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:15:10,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:15:10,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:15:10,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:15:10,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:15:10,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:15:10,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:15:10,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:15:10,684 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:15:10,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:15:10,684 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:15:10,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:15:10,686 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:15:10,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:15:10,686 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:15:10,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:15:10,687 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:15:10,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:15:10,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:15:10,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:15:10,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:15:10,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:15:10,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:15:10,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:15:10,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:15:10,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:15:10,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:15:10,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:15:10,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:15:10,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:15:10,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:15:10,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:10,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:15:10,693 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:15:10,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:15:10,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:15:10,695 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:15:10,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:15:10,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:15:10,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:15:10,696 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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 [2022-11-19 07:15:10,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:15:11,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:15:11,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:15:11,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:15:11,043 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:15:11,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-19 07:15:11,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/e878d0154/6dfa5fa4dba6418f99eae4f9f2ef7c90/FLAGfcaf0088b [2022-11-19 07:15:11,886 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:15:11,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-19 07:15:11,915 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/e878d0154/6dfa5fa4dba6418f99eae4f9f2ef7c90/FLAGfcaf0088b [2022-11-19 07:15:12,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/e878d0154/6dfa5fa4dba6418f99eae4f9f2ef7c90 [2022-11-19 07:15:12,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:15:12,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:15:12,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:12,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:15:12,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:15:12,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:12,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84d9803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12, skipping insertion in model container [2022-11-19 07:15:12,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:12,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:15:12,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:15:12,410 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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-19 07:15:12,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:12,788 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:15:12,800 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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-19 07:15:12,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:12,988 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:15:12,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12 WrapperNode [2022-11-19 07:15:12,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:12,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:12,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:15:12,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:15:13,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,220 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1743 [2022-11-19 07:15:13,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:13,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:15:13,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:15:13,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:15:13,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:15:13,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:15:13,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:15:13,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:15:13,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (1/1) ... [2022-11-19 07:15:13,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:13,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:13,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:15:13,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:15:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:15:13,921 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:15:13,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:15:16,939 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:15:22,878 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:15:22,879 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:15:22,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:22 BoogieIcfgContainer [2022-11-19 07:15:22,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:15:22,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:15:22,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:15:22,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:15:22,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:15:12" (1/3) ... [2022-11-19 07:15:22,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fb3af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:22, skipping insertion in model container [2022-11-19 07:15:22,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:12" (2/3) ... [2022-11-19 07:15:22,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fb3af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:22, skipping insertion in model container [2022-11-19 07:15:22,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:22" (3/3) ... [2022-11-19 07:15:22,892 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-19 07:15:22,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:15:22,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:15:22,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:15:22,977 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;@c3ad31d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:15:22,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:15:22,981 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 07:15:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:15:22,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:22,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:15:22,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 35829182, now seen corresponding path program 1 times [2022-11-19 07:15:23,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:23,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839886431] [2022-11-19 07:15:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:15:23,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:15:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:15:23,627 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:15:23,630 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:15:23,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:15:23,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:15:23,640 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:15:23,648 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:15:23,693 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:15:23,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:15:23 BoogieIcfgContainer [2022-11-19 07:15:23,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:15:23,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:15:23,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:15:23,705 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:15:23,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:22" (3/4) ... [2022-11-19 07:15:23,710 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:15:23,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:15:23,712 INFO L158 Benchmark]: Toolchain (without parser) took 11631.04ms. Allocated memory was 157.3MB in the beginning and 935.3MB in the end (delta: 778.0MB). Free memory was 124.1MB in the beginning and 463.2MB in the end (delta: -339.1MB). Peak memory consumption was 438.3MB. Max. memory is 16.1GB. [2022-11-19 07:15:23,712 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 96.5MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:15:23,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 905.81ms. Allocated memory is still 157.3MB. Free memory was 124.1MB in the beginning and 103.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-11-19 07:15:23,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 230.56ms. Allocated memory is still 157.3MB. Free memory was 103.0MB in the beginning and 87.1MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:15:23,715 INFO L158 Benchmark]: Boogie Preprocessor took 208.02ms. Allocated memory is still 157.3MB. Free memory was 87.1MB in the beginning and 120.1MB in the end (delta: -33.0MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-11-19 07:15:23,716 INFO L158 Benchmark]: RCFGBuilder took 9451.03ms. Allocated memory was 157.3MB in the beginning and 935.3MB in the end (delta: 778.0MB). Free memory was 120.1MB in the beginning and 509.3MB in the end (delta: -389.2MB). Peak memory consumption was 390.3MB. Max. memory is 16.1GB. [2022-11-19 07:15:23,716 INFO L158 Benchmark]: TraceAbstraction took 819.94ms. Allocated memory is still 935.3MB. Free memory was 509.3MB in the beginning and 463.2MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-19 07:15:23,717 INFO L158 Benchmark]: Witness Printer took 5.81ms. Allocated memory is still 935.3MB. Free memory is still 463.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:15:23,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 96.5MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 905.81ms. Allocated memory is still 157.3MB. Free memory was 124.1MB in the beginning and 103.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 230.56ms. Allocated memory is still 157.3MB. Free memory was 103.0MB in the beginning and 87.1MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 208.02ms. Allocated memory is still 157.3MB. Free memory was 87.1MB in the beginning and 120.1MB in the end (delta: -33.0MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * RCFGBuilder took 9451.03ms. Allocated memory was 157.3MB in the beginning and 935.3MB in the end (delta: 778.0MB). Free memory was 120.1MB in the beginning and 509.3MB in the end (delta: -389.2MB). Peak memory consumption was 390.3MB. Max. memory is 16.1GB. * TraceAbstraction took 819.94ms. Allocated memory is still 935.3MB. Free memory was 509.3MB in the beginning and 463.2MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 5.81ms. Allocated memory is still 935.3MB. Free memory is still 463.2MB. 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 182, overapproximation of bitwiseAnd at line 127. 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_14 = 0; [L39] const SORT_4 var_43 = 1; [L40] const SORT_4 var_44 = 0; [L41] const SORT_2 var_54 = 0; [L42] const SORT_2 var_56 = 3; [L43] const SORT_2 var_59 = 2; [L44] const SORT_2 var_62 = 1; [L45] const SORT_2 var_70 = 255; [L46] const SORT_3 var_74 = 0; [L47] const SORT_4 var_78 = 255; [L49] SORT_1 input_53; [L50] SORT_1 input_55; [L51] SORT_1 input_57; [L52] SORT_1 input_58; [L53] SORT_1 input_60; [L54] SORT_1 input_61; [L55] SORT_1 input_71; [L56] SORT_1 input_72; [L57] SORT_1 input_73; [L58] SORT_1 input_90; [L59] SORT_1 input_91; [L60] SORT_1 input_106; [L61] SORT_1 input_107; [L62] SORT_1 input_124; [L63] SORT_1 input_132; [L64] SORT_1 input_140; [L65] SORT_1 input_148; [L66] SORT_1 input_156; [L67] SORT_1 input_164; [L69] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_2 init_7_arg_1 = var_5; [L89] state_6 = init_7_arg_1 [L90] SORT_2 init_9_arg_1 = var_5; [L91] state_8 = init_9_arg_1 [L92] SORT_2 init_11_arg_1 = var_5; [L93] state_10 = init_11_arg_1 [L94] SORT_2 init_13_arg_1 = var_5; [L95] state_12 = init_13_arg_1 [L96] SORT_1 init_16_arg_1 = var_14; [L97] state_15 = init_16_arg_1 [L98] SORT_1 init_18_arg_1 = var_14; [L99] state_17 = init_18_arg_1 [L100] SORT_1 init_20_arg_1 = var_14; [L101] state_19 = init_20_arg_1 [L102] SORT_1 init_22_arg_1 = var_14; [L103] state_21 = init_22_arg_1 [L104] SORT_1 init_24_arg_1 = var_14; [L105] state_23 = init_24_arg_1 [L106] SORT_1 init_26_arg_1 = var_14; [L107] state_25 = init_26_arg_1 [L108] SORT_1 init_28_arg_1 = var_14; [L109] state_27 = init_28_arg_1 [L110] SORT_1 init_30_arg_1 = var_14; [L111] state_29 = init_30_arg_1 [L112] SORT_1 init_32_arg_1 = var_14; [L113] state_31 = init_32_arg_1 [L114] SORT_1 init_34_arg_1 = var_14; [L115] state_33 = init_34_arg_1 [L116] SORT_1 init_36_arg_1 = var_14; [L117] state_35 = init_36_arg_1 [L118] SORT_1 init_38_arg_1 = var_14; [L119] state_37 = init_38_arg_1 [L120] SORT_1 init_40_arg_1 = var_14; [L121] state_39 = init_40_arg_1 [L122] SORT_1 init_42_arg_1 = var_14; [L123] state_41 = init_42_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_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_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_15=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_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L126] input_53 = __VERIFIER_nondet_uchar() [L127] input_53 = input_53 & mask_SORT_1 [L128] input_55 = __VERIFIER_nondet_uchar() [L129] input_55 = input_55 & mask_SORT_1 [L130] input_57 = __VERIFIER_nondet_uchar() [L131] input_57 = input_57 & mask_SORT_1 [L132] input_58 = __VERIFIER_nondet_uchar() [L133] input_58 = input_58 & mask_SORT_1 [L134] input_60 = __VERIFIER_nondet_uchar() [L135] input_60 = input_60 & mask_SORT_1 [L136] input_61 = __VERIFIER_nondet_uchar() [L137] input_61 = input_61 & mask_SORT_1 [L138] input_71 = __VERIFIER_nondet_uchar() [L139] input_71 = input_71 & mask_SORT_1 [L140] input_72 = __VERIFIER_nondet_uchar() [L141] input_72 = input_72 & mask_SORT_1 [L142] input_73 = __VERIFIER_nondet_uchar() [L143] input_73 = input_73 & mask_SORT_1 [L144] input_90 = __VERIFIER_nondet_uchar() [L145] input_90 = input_90 & mask_SORT_1 [L146] input_91 = __VERIFIER_nondet_uchar() [L147] input_91 = input_91 & mask_SORT_1 [L148] input_106 = __VERIFIER_nondet_uchar() [L149] input_106 = input_106 & mask_SORT_1 [L150] input_107 = __VERIFIER_nondet_uchar() [L151] input_107 = input_107 & mask_SORT_1 [L152] input_124 = __VERIFIER_nondet_uchar() [L153] input_132 = __VERIFIER_nondet_uchar() [L154] input_140 = __VERIFIER_nondet_uchar() [L155] input_148 = __VERIFIER_nondet_uchar() [L156] input_156 = __VERIFIER_nondet_uchar() [L157] input_164 = __VERIFIER_nondet_uchar() [L160] SORT_1 var_45_arg_0 = state_23; [L161] SORT_4 var_45_arg_1 = var_43; [L162] SORT_4 var_45_arg_2 = var_44; [L163] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L164] SORT_1 var_46_arg_0 = state_31; [L165] SORT_4 var_46_arg_1 = var_43; [L166] SORT_4 var_46_arg_2 = var_44; [L167] SORT_4 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L168] SORT_4 var_47_arg_0 = var_45; [L169] SORT_4 var_47_arg_1 = var_46; [L170] SORT_4 var_47 = var_47_arg_0 + var_47_arg_1; [L171] SORT_1 var_48_arg_0 = state_39; [L172] SORT_4 var_48_arg_1 = var_43; [L173] SORT_4 var_48_arg_2 = var_44; [L174] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L175] SORT_4 var_49_arg_0 = var_47; [L176] SORT_4 var_49_arg_1 = var_48; [L177] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L178] var_49 = var_49 & mask_SORT_4 [L179] SORT_4 var_50_arg_0 = var_49; [L180] SORT_4 var_50_arg_1 = var_43; [L181] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L182] SORT_1 var_51_arg_0 = ~state_41; [L183] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L184] SORT_1 var_51_arg_1 = ~var_50; [L185] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L186] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L187] var_51 = var_51 & mask_SORT_1 [L188] SORT_1 bad_52_arg_0 = var_51; [L189] CALL __VERIFIER_assert(!(bad_52_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 [2022-11-19 07:15:23,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 --- 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 07:15:26,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:15:26,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:15:26,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:15:26,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:15:26,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:15:26,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:15:26,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:15:26,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:15:26,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:15:26,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:15:26,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:15:26,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:15:26,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:15:26,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:15:26,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:15:26,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:15:26,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:15:26,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:15:26,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:15:26,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:15:26,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:15:26,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:15:26,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:15:26,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:15:26,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:15:26,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:15:26,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:15:26,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:15:26,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:15:26,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:15:26,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:15:26,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:15:26,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:15:26,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:15:26,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:15:26,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:15:26,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:15:26,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:15:26,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:15:26,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:15:26,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:15:26,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:15:26,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:15:26,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:15:26,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:15:26,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:15:26,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:15:26,519 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:15:26,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:15:26,520 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:15:26,520 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:15:26,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:15:26,521 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:15:26,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:15:26,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:15:26,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:15:26,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:15:26,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:15:26,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:15:26,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:15:26,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:15:26,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:15:26,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:15:26,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:15:26,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:15:26,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:15:26,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:15:26,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:26,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:15:26,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:15:26,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:15:26,527 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:15:26,527 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:26,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:15:26,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:15:26,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:15:26,528 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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 [2022-11-19 07:15:26,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:15:26,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:15:26,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:15:27,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:15:27,001 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:15:27,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-19 07:15:27,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/600a1947d/47950e0e1eac4c76a2f62351b6488431/FLAGea7292cd7 [2022-11-19 07:15:27,673 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:15:27,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-19 07:15:27,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/600a1947d/47950e0e1eac4c76a2f62351b6488431/FLAGea7292cd7 [2022-11-19 07:15:27,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/data/600a1947d/47950e0e1eac4c76a2f62351b6488431 [2022-11-19 07:15:27,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:15:27,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:15:27,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:27,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:15:27,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:15:27,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:27" (1/1) ... [2022-11-19 07:15:27,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d53ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:27, skipping insertion in model container [2022-11-19 07:15:27,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:27" (1/1) ... [2022-11-19 07:15:27,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:15:28,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:15:28,224 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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-19 07:15:28,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:28,607 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:15:28,621 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_0cf56bb4-7056-4561-88fc-6f2c96637a4f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-19 07:15:28,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:28,750 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:15:28,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28 WrapperNode [2022-11-19 07:15:28,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:28,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:28,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:15:28,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:15:28,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,856 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1106 [2022-11-19 07:15:28,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:28,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:15:28,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:15:28,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:15:28,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,951 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:15:28,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:15:28,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:15:28,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:15:28,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (1/1) ... [2022-11-19 07:15:28,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:29,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:29,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:15:29,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:15:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:15:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:15:29,486 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:15:29,488 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:15:31,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:15:31,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:15:31,376 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:15:31,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:31 BoogieIcfgContainer [2022-11-19 07:15:31,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:15:31,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:15:31,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:15:31,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:15:31,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:15:27" (1/3) ... [2022-11-19 07:15:31,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85f5698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:31, skipping insertion in model container [2022-11-19 07:15:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:28" (2/3) ... [2022-11-19 07:15:31,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85f5698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:31, skipping insertion in model container [2022-11-19 07:15:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:31" (3/3) ... [2022-11-19 07:15:31,391 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-19 07:15:31,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:15:31,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:15:31,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:15:31,511 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;@347d2273, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:15:31,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:15:31,516 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 07:15:31,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:15:31,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:31,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:15:31,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:15:31,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:31,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641653107] [2022-11-19 07:15:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:31,550 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 07:15:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:31,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:15:31,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:15:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:31,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-19 07:15:31,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:32,280 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 07:15:32,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:32,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:32,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641653107] [2022-11-19 07:15:32,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641653107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:32,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:32,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:15:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984265415] [2022-11-19 07:15:32,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:32,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:15:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:15:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:15:32,337 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 07:15:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:32,602 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:15:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:32,605 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 07:15:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:32,614 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:15:32,615 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:15:32,618 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 07:15:32,622 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:32,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:15:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:15:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:15:32,657 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 07:15:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:15:32,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:15:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:32,660 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:15:32,660 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 07:15:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:15:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:15:32,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:32,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:32,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:15:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:15:32,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:32,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:15:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:32,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667398174] [2022-11-19 07:15:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:32,883 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 07:15:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:32,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:15:32,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:15:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:33,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-19 07:15:33,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:35,625 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 07:15:35,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:16:07,571 WARN L233 SmtUtils]: Spent 27.93s on a formula simplification that was a NOOP. DAG size: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:08,836 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 07:16:08,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:16:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667398174] [2022-11-19 07:16:08,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667398174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:16:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1779408943] [2022-11-19 07:16:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:08,837 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:16:08,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:16:08,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:16:08,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:16:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:10,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-19 07:16:10,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:16:11,975 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 07:16:11,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:13,910 WARN L233 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 86 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:51,800 WARN L233 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 270 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:52,853 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 07:18:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1779408943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:18:52,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414801511] [2022-11-19 07:18:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:52,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:52,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:52,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:18:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:53,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-19 07:18:53,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:19:01,485 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 07:19:01,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:19:41,377 WARN L233 SmtUtils]: Spent 35.06s on a formula simplification. DAG size of input: 86 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:42,791 WARN L233 SmtUtils]: Spent 51.07s on a formula simplification that was a NOOP. DAG size: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:38,411 WARN L233 SmtUtils]: Spent 51.23s on a formula simplification that was a NOOP. DAG size: 271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:39,058 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 07:21:39,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414801511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:39,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:21:39,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 17 [2022-11-19 07:21:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578823229] [2022-11-19 07:21:39,062 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:21:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:21:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:21:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:21:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=200, Unknown=9, NotChecked=0, Total=272 [2022-11-19 07:21:39,070 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:21:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:40,386 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:21:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:21:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:21:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:40,388 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:21:40,389 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:21:40,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 353.1s TimeCoverageRelationStatistics Valid=99, Invalid=272, Unknown=9, NotChecked=0, Total=380 [2022-11-19 07:21:40,391 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:40,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-19 07:21:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:21:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:21:40,397 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 07:21:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:21:40,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:21:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:40,399 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:21:40,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:21:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:21:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:21:40,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:40,401 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:21:40,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:21:40,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:40,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:41,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:21:41,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:21:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:21:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:21:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236652779] [2022-11-19 07:21:41,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:21:41,017 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 07:21:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:21:41,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:21:41,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf56bb4-7056-4561-88fc-6f2c96637a4f/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 07:21:42,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:21:42,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:21:42,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 294 conjunts are in the unsatisfiable core [2022-11-19 07:21:42,109 INFO L286 TraceCheckSpWp]: Computing forward predicates...