./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF --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 32bit --witnessprinter.graph.data.programhash 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:48:44,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:48:44,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:48:44,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:48:44,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:48:44,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:48:44,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:48:44,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:48:44,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:48:44,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:48:44,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:48:44,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:48:44,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:48:44,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:48:44,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:48:44,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:48:44,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:48:44,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:48:44,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:48:44,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:48:44,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:48:44,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:48:44,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:48:44,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:48:44,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:48:44,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:48:44,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:48:44,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:48:44,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:48:44,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:48:44,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:48:44,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:48:44,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:48:44,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:48:44,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:48:44,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:48:44,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:48:44,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:48:44,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:48:44,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:48:44,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:48:44,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:48:44,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:48:44,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:48:44,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:48:44,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:48:44,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:48:44,813 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:48:44,813 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:48:44,813 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:48:44,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:48:44,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:48:44,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:48:44,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:48:44,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:48:44,814 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:48:44,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:48:44,815 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:48:44,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:48:44,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:48:44,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:48:44,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:48:44,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:48:44,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:48:44,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:48:44,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:48:44,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:48:44,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:48:44,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:48:44,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:48:44,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:48:44,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:48:44,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:48:44,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:48:44,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:48:44,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:48:44,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:48:44,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:48:44,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:48:44,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:48:44,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:48:44,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:48:44,837 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2021-11-12 23:48:45,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:48:45,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:48:45,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:48:45,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:48:45,118 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:48:45,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-12 23:48:45,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/f25030153/babc66d519584267837c7d1f7ea5f976/FLAG2259500ac [2021-11-12 23:48:45,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:48:45,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-12 23:48:45,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/f25030153/babc66d519584267837c7d1f7ea5f976/FLAG2259500ac [2021-11-12 23:48:46,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/f25030153/babc66d519584267837c7d1f7ea5f976 [2021-11-12 23:48:46,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:48:46,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:48:46,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:48:46,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:48:46,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:48:46,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa1a8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46, skipping insertion in model container [2021-11-12 23:48:46,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:48:46,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:48:46,313 WARN L228 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_75898d9c-518f-46df-bc5e-59d8f678aabc/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-12 23:48:46,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:48:46,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:48:46,387 WARN L228 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_75898d9c-518f-46df-bc5e-59d8f678aabc/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-12 23:48:46,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:48:46,415 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:48:46,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46 WrapperNode [2021-11-12 23:48:46,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:48:46,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:48:46,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:48:46,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:48:46,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:48:46,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:48:46,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:48:46,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:48:46,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:48:46,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:48:46,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:48:46,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:48:46,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (1/1) ... [2021-11-12 23:48:46,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:48:46,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:48:46,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:48:46,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:48:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:48:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:48:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:48:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:48:46,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:48:46,867 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:48:46,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:48:46 BoogieIcfgContainer [2021-11-12 23:48:46,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:48:46,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:48:46,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:48:46,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:48:46,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:48:46" (1/3) ... [2021-11-12 23:48:46,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ecf3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:48:46, skipping insertion in model container [2021-11-12 23:48:46,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:46" (2/3) ... [2021-11-12 23:48:46,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ecf3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:48:46, skipping insertion in model container [2021-11-12 23:48:46,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:48:46" (3/3) ... [2021-11-12 23:48:46,878 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2021-11-12 23:48:46,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:48:46,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:48:46,934 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:48:46,942 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:48:46,943 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:48:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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) [2021-11-12 23:48:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:48:46,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:46,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:46,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1394921896, now seen corresponding path program 1 times [2021-11-12 23:48:46,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:48:46,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110468683] [2021-11-12 23:48:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:46,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:48:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:48:47,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:48:47,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110468683] [2021-11-12 23:48:47,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110468683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:47,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:48:47,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:48:47,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442783571] [2021-11-12 23:48:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:48:47,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:48:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:48:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:48:47,343 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-11-12 23:48:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:47,484 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2021-11-12 23:48:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:48:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) Word has length 13 [2021-11-12 23:48:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:47,496 INFO L225 Difference]: With dead ends: 89 [2021-11-12 23:48:47,496 INFO L226 Difference]: Without dead ends: 73 [2021-11-12 23:48:47,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:48:47,504 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:47,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 129 Invalid, 50 Unknown, 0 Unchecked, 4.70ms Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 60.19ms Time] [2021-11-12 23:48:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-12 23:48:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 19. [2021-11-12 23:48:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-12 23:48:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-12 23:48:47,545 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2021-11-12 23:48:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:47,546 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-12 23:48:47,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-11-12 23:48:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-12 23:48:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:48:47,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:47,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:47,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:48:47,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1411932557, now seen corresponding path program 1 times [2021-11-12 23:48:47,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:48:47,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969893506] [2021-11-12 23:48:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:47,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:48:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:48:47,578 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:48:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:48:47,624 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:48:47,624 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:48:47,627 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:48:47,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:48:47,633 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:48:47,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:48:47,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:48:47 BoogieIcfgContainer [2021-11-12 23:48:47,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:48:47,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:48:47,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:48:47,676 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:48:47,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:48:46" (3/4) ... [2021-11-12 23:48:47,680 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:48:47,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:48:47,681 INFO L158 Benchmark]: Toolchain (without parser) took 1612.61ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 69.2MB in the beginning and 84.8MB in the end (delta: -15.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-12 23:48:47,682 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 102.8MB. Free memory was 55.9MB in the beginning and 55.9MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:48:47,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.03ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 77.3MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:48:47,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.36ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 75.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:48:47,684 INFO L158 Benchmark]: Boogie Preprocessor took 45.52ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 74.6MB in the end (delta: 997.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:48:47,685 INFO L158 Benchmark]: RCFGBuilder took 359.02ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 63.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:48:47,686 INFO L158 Benchmark]: TraceAbstraction took 802.82ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.1MB in the beginning and 84.8MB in the end (delta: -21.7MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2021-11-12 23:48:47,687 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 123.7MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:48:47,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 102.8MB. Free memory was 55.9MB in the beginning and 55.9MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.03ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 77.3MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.36ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 75.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.52ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 74.6MB in the end (delta: 997.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.02ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 63.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 802.82ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.1MB in the beginning and 84.8MB in the end (delta: -21.7MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 123.7MB. Free memory is still 84.8MB. 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: 66]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 47. Possible FailurePath: [L1] int __return_main; [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 VAL [__return_main=0, main__i=0] [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0, main__D=50, main__i=0, main__X=49] [L28] COND TRUE main__X >= -128.0 VAL [__return_main=0, main__D=50, main__i=0, main__X=49] [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L37] COND TRUE main__D >= 0.0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__X=49] [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L53] COND FALSE !(main__Y >= -129.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L79] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L64] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L66] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 60.19ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 47.11ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 40 mSDtfsCounter, 47 mSolverCounterSat, 4.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 54 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 23:48:47,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF --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 32bit --witnessprinter.graph.data.programhash 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:48:50,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:48:50,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:48:50,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:48:50,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:48:50,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:48:50,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:48:50,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:48:50,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:48:50,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:48:50,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:48:50,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:48:50,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:48:50,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:48:50,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:48:50,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:48:50,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:48:50,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:48:50,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:48:50,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:48:50,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:48:50,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:48:50,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:48:50,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:48:50,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:48:50,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:48:50,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:48:50,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:48:50,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:48:50,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:48:50,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:48:50,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:48:50,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:48:50,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:48:50,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:48:50,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:48:50,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:48:50,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:48:50,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:48:50,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:48:50,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:48:50,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:48:50,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:48:50,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:48:50,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:48:50,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:48:50,442 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:48:50,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:48:50,442 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:48:50,442 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:48:50,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:48:50,443 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:48:50,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:48:50,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:48:50,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:48:50,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:48:50,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:48:50,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:48:50,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:48:50,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:48:50,446 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:48:50,447 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:48:50,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:48:50,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:48:50,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:48:50,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:48:50,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:48:50,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:48:50,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:48:50,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:48:50,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:48:50,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:48:50,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:48:50,450 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:48:50,450 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:50,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:48:50,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:48:50,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:48:50,452 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_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2021-11-12 23:48:50,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:48:50,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:48:50,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:48:50,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:48:50,874 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:48:50,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-12 23:48:50,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/231cb5188/e66d607300b04efebcfe70ee1d398c7b/FLAG01c07dee2 [2021-11-12 23:48:51,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:48:51,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-12 23:48:51,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/231cb5188/e66d607300b04efebcfe70ee1d398c7b/FLAG01c07dee2 [2021-11-12 23:48:51,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/data/231cb5188/e66d607300b04efebcfe70ee1d398c7b [2021-11-12 23:48:51,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:48:51,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:48:51,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:48:51,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:48:51,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:48:51,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:48:51" (1/1) ... [2021-11-12 23:48:51,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f094076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:51, skipping insertion in model container [2021-11-12 23:48:51,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:48:51" (1/1) ... [2021-11-12 23:48:51,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:48:52,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:48:52,206 WARN L228 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_75898d9c-518f-46df-bc5e-59d8f678aabc/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-12 23:48:52,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:48:52,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:48:52,251 WARN L228 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_75898d9c-518f-46df-bc5e-59d8f678aabc/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-12 23:48:52,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:48:52,298 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:48:52,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52 WrapperNode [2021-11-12 23:48:52,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:48:52,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:48:52,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:48:52,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:48:52,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:48:52,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:48:52,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:48:52,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:48:52,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:48:52,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:48:52,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:48:52,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:48:52,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (1/1) ... [2021-11-12 23:48:52,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:48:52,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:48:52,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:48:52,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:48:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:48:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:48:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:48:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:48:54,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:48:54,116 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:48:54,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:48:54 BoogieIcfgContainer [2021-11-12 23:48:54,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:48:54,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:48:54,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:48:54,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:48:54,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:48:51" (1/3) ... [2021-11-12 23:48:54,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ed3db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:48:54, skipping insertion in model container [2021-11-12 23:48:54,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:52" (2/3) ... [2021-11-12 23:48:54,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ed3db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:48:54, skipping insertion in model container [2021-11-12 23:48:54,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:48:54" (3/3) ... [2021-11-12 23:48:54,126 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2021-11-12 23:48:54,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:48:54,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:48:54,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:48:54,183 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:48:54,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:48:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-11-12 23:48:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:48:54,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:54,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:54,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2021-11-12 23:48:54,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:54,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378127059] [2021-11-12 23:48:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:54,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:54,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:54,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:54,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:48:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:54,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:48:54,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:48:54,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:48:54,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:54,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378127059] [2021-11-12 23:48:54,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378127059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:54,628 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:48:54,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:48:54,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474076345] [2021-11-12 23:48:54,631 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:54,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:48:54,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:48:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:48:54,672 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-12 23:48:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:54,794 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2021-11-12 23:48:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:48:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-11-12 23:48:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:54,806 INFO L225 Difference]: With dead ends: 71 [2021-11-12 23:48:54,807 INFO L226 Difference]: Without dead ends: 57 [2021-11-12 23:48:54,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:48:54,815 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 105 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:54,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 202 Invalid, 20 Unknown, 0 Unchecked, 11.25ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 32.11ms Time] [2021-11-12 23:48:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-12 23:48:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 23. [2021-11-12 23:48:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-11-12 23:48:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-11-12 23:48:54,859 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2021-11-12 23:48:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:54,860 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-12 23:48:54,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-12 23:48:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-11-12 23:48:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:48:54,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:54,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:54,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:48:55,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:55,080 INFO L85 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2021-11-12 23:48:55,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:55,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981273337] [2021-11-12 23:48:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:55,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:55,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:55,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:55,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:48:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:55,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:48:55,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:01,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:37,781 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:50:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:33,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:33,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981273337] [2021-11-12 23:50:33,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981273337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:33,268 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:33,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-12 23:50:33,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860480686] [2021-11-12 23:50:33,269 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:33,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:50:33,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:50:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=98, Unknown=10, NotChecked=0, Total=156 [2021-11-12 23:50:33,278 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-11-12 23:51:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:05,045 INFO L93 Difference]: Finished difference Result 88 states and 120 transitions. [2021-11-12 23:51:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:51:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 16 [2021-11-12 23:51:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:05,054 INFO L225 Difference]: With dead ends: 88 [2021-11-12 23:51:05,054 INFO L226 Difference]: Without dead ends: 67 [2021-11-12 23:51:05,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 72.6s TimeCoverageRelationStatistics Valid=62, Invalid=132, Unknown=16, NotChecked=0, Total=210 [2021-11-12 23:51:05,057 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11917.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 12372.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:05,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 168 Invalid, 260 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 141 Unchecked, 12372.46ms Time] [2021-11-12 23:51:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-12 23:51:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 35. [2021-11-12 23:51:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2021-11-12 23:51:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-11-12 23:51:05,071 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 16 [2021-11-12 23:51:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:05,071 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-11-12 23:51:05,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-11-12 23:51:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2021-11-12 23:51:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:51:05,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:05,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:05,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:05,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:05,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:51:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1271663018, now seen corresponding path program 1 times [2021-11-12 23:51:05,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:05,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884860905] [2021-11-12 23:51:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:05,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:05,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:05,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:05,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:51:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:05,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:51:05,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:05,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:05,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:05,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884860905] [2021-11-12 23:51:05,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884860905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:05,478 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:51:05,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646807745] [2021-11-12 23:51:05,478 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:05,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:05,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:05,480 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-12 23:51:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:05,643 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2021-11-12 23:51:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:05,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-11-12 23:51:05,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:05,649 INFO L225 Difference]: With dead ends: 57 [2021-11-12 23:51:05,649 INFO L226 Difference]: Without dead ends: 34 [2021-11-12 23:51:05,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:05,651 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:05,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 157.41ms Time] [2021-11-12 23:51:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-12 23:51:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-12 23:51:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 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) [2021-11-12 23:51:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-11-12 23:51:05,659 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 16 [2021-11-12 23:51:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:05,660 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-11-12 23:51:05,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-12 23:51:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-11-12 23:51:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:51:05,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:05,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:05,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:05,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:05,862 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:51:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1450538051, now seen corresponding path program 1 times [2021-11-12 23:51:05,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:05,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068569943] [2021-11-12 23:51:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:05,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:05,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:05,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:51:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:05,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:51:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:09,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:14,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:14,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068569943] [2021-11-12 23:51:14,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068569943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:14,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:14,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:51:14,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733682247] [2021-11-12 23:51:14,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:14,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:51:14,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:51:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:51:14,842 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:33,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:51:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:47,471 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2021-11-12 23:51:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:51:47,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 23:51:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:47,484 INFO L225 Difference]: With dead ends: 164 [2021-11-12 23:51:47,485 INFO L226 Difference]: Without dead ends: 144 [2021-11-12 23:51:47,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:51:47,487 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 136 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24068.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24717.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:47,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 100 Invalid, 115 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [20 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 24717.77ms Time] [2021-11-12 23:51:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-12 23:51:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 63. [2021-11-12 23:51:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 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) [2021-11-12 23:51:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2021-11-12 23:51:47,505 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 17 [2021-11-12 23:51:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:47,506 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-11-12 23:51:47,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2021-11-12 23:51:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:51:47,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:47,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:47,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:51:47,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:47,720 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:51:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1069229389, now seen corresponding path program 1 times [2021-11-12 23:51:47,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:47,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201444160] [2021-11-12 23:51:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:47,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:47,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:47,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:51:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:47,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:51:47,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:59,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:16,678 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 17 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:52:46,562 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:53:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:37,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:37,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201444160] [2021-11-12 23:53:37,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201444160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:37,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:37,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-11-12 23:53:37,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468416445] [2021-11-12 23:53:37,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:37,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:53:37,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:37,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:53:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=122, Unknown=5, NotChecked=0, Total=182 [2021-11-12 23:53:37,922 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:49,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:54:08,027 WARN L227 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 32 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:54:34,552 WARN L227 SmtUtils]: Spent 18.55s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:54:36,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:54:38,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:54:40,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:54:41,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:15,409 WARN L227 SmtUtils]: Spent 24.42s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:55:18,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:20,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:35,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:37,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:39,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:41,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:44,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:45,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:06,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:09,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:11,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:15,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:18,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:20,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:22,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:24,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:27,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:29,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:32,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:35,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:39,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:40,536 INFO L93 Difference]: Finished difference Result 251 states and 301 transitions. [2021-11-12 23:56:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:56:40,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 23:56:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:40,549 INFO L225 Difference]: With dead ends: 251 [2021-11-12 23:56:40,549 INFO L226 Difference]: Without dead ends: 213 [2021-11-12 23:56:40,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 162.3s TimeCoverageRelationStatistics Valid=117, Invalid=246, Unknown=17, NotChecked=0, Total=380 [2021-11-12 23:56:40,551 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 233 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 21 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81419.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 82827.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:40,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 115 Invalid, 262 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [21 Valid, 152 Invalid, 10 Unknown, 79 Unchecked, 82827.55ms Time] [2021-11-12 23:56:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-12 23:56:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 63. [2021-11-12 23:56:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 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) [2021-11-12 23:56:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2021-11-12 23:56:40,565 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 17 [2021-11-12 23:56:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:40,566 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-11-12 23:56:40,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:56:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2021-11-12 23:56:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:56:40,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:40,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:40,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:40,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:56:40,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:56:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:40,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1175383176, now seen corresponding path program 1 times [2021-11-12 23:56:40,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:40,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136873906] [2021-11-12 23:56:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:40,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:40,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:40,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:56:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:40,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:56:40,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:56:40,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:56:40,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:40,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136873906] [2021-11-12 23:56:40,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136873906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:56:40,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:56:40,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:56:40,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799516660] [2021-11-12 23:56:40,945 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:56:40,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:56:40,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:56:40,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:56:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:56:40,946 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-12 23:56:41,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:41,004 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2021-11-12 23:56:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:56:41,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 23:56:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:41,005 INFO L225 Difference]: With dead ends: 89 [2021-11-12 23:56:41,005 INFO L226 Difference]: Without dead ends: 33 [2021-11-12 23:56:41,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:56:41,007 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:41,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 53.65ms Time] [2021-11-12 23:56:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-12 23:56:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-12 23:56:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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) [2021-11-12 23:56:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-11-12 23:56:41,014 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 17 [2021-11-12 23:56:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:41,014 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-11-12 23:56:41,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-12 23:56:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-11-12 23:56:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 23:56:41,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:41,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:41,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:41,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:56:41,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:56:41,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -66815887, now seen corresponding path program 1 times [2021-11-12 23:56:41,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:41,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489149033] [2021-11-12 23:56:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:41,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:41,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:41,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:41,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:56:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:41,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:56:41,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:59,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:59,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489149033] [2021-11-12 23:56:59,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~main__D~0#1|] [2021-11-12 23:56:59,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1156102525] [2021-11-12 23:56:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:59,291 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:59,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:56:59,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:56:59,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:56:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:59,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:56:59,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:12,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~main__D~0#1|] [2021-11-12 23:57:12,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198489829] [2021-11-12 23:57:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:12,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:57:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:57:12,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:57:12,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 23:57:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:19,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:57:19,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:33,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~main__D~0#1|] [2021-11-12 23:57:33,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:57:33,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 23:57:33,322 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 23:57:33,322 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 23:57:33,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:57:33,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:33,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:33,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:33,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:57:33,955 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:57:33,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:57:33,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:57:33 BoogieIcfgContainer [2021-11-12 23:57:33,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:57:33,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:57:33,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:57:33,977 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:57:33,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:48:54" (3/4) ... [2021-11-12 23:57:33,980 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:57:33,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:57:33,981 INFO L158 Benchmark]: Toolchain (without parser) took 522027.52ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 54.8MB in the beginning and 34.6MB in the end (delta: 20.2MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2021-11-12 23:57:33,981 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:57:33,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.57ms. Allocated memory is still 73.4MB. Free memory was 54.6MB in the beginning and 56.8MB in the end (delta: -2.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-12 23:57:33,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.11ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 55.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:57:33,982 INFO L158 Benchmark]: Boogie Preprocessor took 32.02ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 53.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:57:33,982 INFO L158 Benchmark]: RCFGBuilder took 1705.97ms. Allocated memory is still 73.4MB. Free memory was 53.6MB in the beginning and 43.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:57:33,983 INFO L158 Benchmark]: TraceAbstraction took 519856.00ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 42.5MB in the beginning and 34.6MB in the end (delta: 7.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2021-11-12 23:57:33,983 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 98.6MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:57:33,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.57ms. Allocated memory is still 73.4MB. Free memory was 54.6MB in the beginning and 56.8MB in the end (delta: -2.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.11ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 55.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.02ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 53.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1705.97ms. Allocated memory is still 73.4MB. Free memory was 53.6MB in the beginning and 43.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 519856.00ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 42.5MB in the beginning and 34.6MB in the end (delta: 7.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 98.6MB. Free memory is still 34.6MB. 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: 66]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; [L28] COND TRUE main__X >= -128.0 [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; [L37] COND TRUE main__D >= 0.0 [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; [L53] COND TRUE main__Y >= -129.0 [L55] COND TRUE main__Y <= 129.0 [L57] main____CPAchecker_TMP_2 = 1 [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 [L64] COND FALSE !(__VERIFIER_assert__cond == 0) [L71] main__i = main__i + 1 [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; [L28] COND TRUE main__X >= -128.0 [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; [L37] COND TRUE main__D >= 0.0 [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; [L53] COND FALSE !(main__Y >= -129.0) [L79] main____CPAchecker_TMP_2 = 0 [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 [L64] COND TRUE __VERIFIER_assert__cond == 0 [L66] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 519.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 247.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 549 SdHoareTripleChecker+Valid, 120160.94ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 549 mSDsluCounter, 685 SdHoareTripleChecker+Invalid, 117631.88ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 220 IncrementalHoareTripleChecker+Unchecked, 514 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 389 IncrementalHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 171 mSDtfsCounter, 389 mSolverCounterSat, 21.15ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 248.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 297 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 235.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 18 QuantifiedInterpolants, 1268 SizeOfPredicates, 21 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 [2021-11-12 23:57:34,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75898d9c-518f-46df-bc5e-59d8f678aabc/bin/utaipan-vmNK8stdcF/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 Writing output log to file Ultimate.log Result: UNKNOWN