./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter_iir.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:13:46,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:13:46,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:13:46,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:13:46,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:13:46,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:13:46,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:13:46,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:13:46,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:13:46,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:13:46,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:13:46,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:13:46,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:13:46,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:13:46,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:13:46,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:13:46,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:13:46,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:13:46,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:13:46,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:13:46,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:13:46,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:13:46,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:13:46,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:13:46,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:13:46,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:13:46,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:13:46,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:13:46,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:13:46,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:13:46,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:13:46,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:13:46,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:13:46,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:13:46,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:13:46,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:13:46,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:13:46,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:13:46,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:13:46,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:13:46,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:13:46,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:13:46,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:13:46,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:13:46,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:13:46,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:13:46,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:13:46,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:13:46,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:13:46,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:13:46,560 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:13:46,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:13:46,561 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:13:46,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:13:46,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:13:46,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:13:46,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:13:46,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:13:46,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:13:46,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:13:46,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:13:46,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:13:46,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:13:46,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:13:46,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:13:46,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:13:46,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:13:46,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:13:46,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:13:46,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:13:46,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:13:46,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:13:46,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:13:46,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:13:46,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:13:46,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:13:46,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-19 04:13:46,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:13:46,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:13:46,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:13:46,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:13:46,903 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:13:46,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-19 04:13:46,986 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/45611c224/357f01989eaf489a96df2c5d53cf19eb/FLAG558fd687e [2021-11-19 04:13:47,518 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:13:47,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-19 04:13:47,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/45611c224/357f01989eaf489a96df2c5d53cf19eb/FLAG558fd687e [2021-11-19 04:13:47,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/45611c224/357f01989eaf489a96df2c5d53cf19eb [2021-11-19 04:13:47,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:13:47,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:13:47,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:13:47,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:13:47,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:13:47,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:47" (1/1) ... [2021-11-19 04:13:47,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1f421f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:47, skipping insertion in model container [2021-11-19 04:13:47,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:47" (1/1) ... [2021-11-19 04:13:47,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:13:47,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:13:48,113 WARN L230 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_f8f84065-3775-418c-940d-9b7197f05fa4/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-19 04:13:48,146 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:13:48,160 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:13:48,174 WARN L230 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_f8f84065-3775-418c-940d-9b7197f05fa4/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-19 04:13:48,191 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:13:48,212 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:13:48,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48 WrapperNode [2021-11-19 04:13:48,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:13:48,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:13:48,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:13:48,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:13:48,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,279 INFO L137 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2021-11-19 04:13:48,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:13:48,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:13:48,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:13:48,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:13:48,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:13:48,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:13:48,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:13:48,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:13:48,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (1/1) ... [2021-11-19 04:13:48,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:13:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:13:48,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:13:48,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:13:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:13:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:13:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:13:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-19 04:13:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-19 04:13:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:13:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:13:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-19 04:13:48,585 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:13:48,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:13:48,931 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:13:48,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:13:48,939 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:13:48,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:48 BoogieIcfgContainer [2021-11-19 04:13:48,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:13:48,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:13:48,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:13:48,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:13:48,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:13:47" (1/3) ... [2021-11-19 04:13:48,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c115f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:48, skipping insertion in model container [2021-11-19 04:13:48,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:48" (2/3) ... [2021-11-19 04:13:48,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c115f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:48, skipping insertion in model container [2021-11-19 04:13:48,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:48" (3/3) ... [2021-11-19 04:13:48,952 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-19 04:13:48,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:13:48,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:13:49,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:13:49,021 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=PETRI_NET, 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 [2021-11-19 04:13:49,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:13:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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) [2021-11-19 04:13:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:13:49,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:49,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:13:49,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:13:49,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1398280527, now seen corresponding path program 1 times [2021-11-19 04:13:49,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:13:49,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686464463] [2021-11-19 04:13:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:49,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:13:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:13:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:49,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:13:49,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686464463] [2021-11-19 04:13:49,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686464463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:13:49,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:13:49,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:13:49,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567634380] [2021-11-19 04:13:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:13:49,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:13:49,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:13:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:13:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:13:49,431 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:13:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:49,458 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-19 04:13:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:13:49,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 04:13:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:49,470 INFO L225 Difference]: With dead ends: 30 [2021-11-19 04:13:49,471 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 04:13:49,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:13:49,480 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:49,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:13:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 04:13:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 04:13:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-11-19 04:13:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-19 04:13:49,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-19 04:13:49,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:49,519 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-19 04:13:49,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:13:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-19 04:13:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:13:49,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:49,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:13:49,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:13:49,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:13:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash 376726835, now seen corresponding path program 1 times [2021-11-19 04:13:49,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:13:49,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916882190] [2021-11-19 04:13:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:49,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:13:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:13:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:49,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:13:49,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916882190] [2021-11-19 04:13:49,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916882190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:13:49,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:13:49,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:13:49,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499207969] [2021-11-19 04:13:49,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:13:49,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:13:49,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:13:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:13:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:13:49,778 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:13:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:49,839 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-19 04:13:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:13:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 04:13:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:49,842 INFO L225 Difference]: With dead ends: 28 [2021-11-19 04:13:49,843 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 04:13:49,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:13:49,846 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:49,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:13:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 04:13:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 04:13:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:13:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-19 04:13:49,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-19 04:13:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:49,858 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-19 04:13:49,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:13:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-19 04:13:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:13:49,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:49,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:13:49,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:13:49,865 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:13:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash -303331535, now seen corresponding path program 1 times [2021-11-19 04:13:49,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:13:49,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37753219] [2021-11-19 04:13:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:49,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:13:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:13:49,985 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:13:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:13:50,167 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:13:50,167 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:13:50,169 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 04:13:50,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:13:50,185 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-19 04:13:50,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:13:50,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:13:50 BoogieIcfgContainer [2021-11-19 04:13:50,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:13:50,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:13:50,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:13:50,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:13:50,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:48" (3/4) ... [2021-11-19 04:13:50,242 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:13:50,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:13:50,243 INFO L158 Benchmark]: Toolchain (without parser) took 2392.32ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 47.7MB in the beginning and 58.6MB in the end (delta: -10.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-19 04:13:50,244 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:13:50,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.24ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 47.5MB in the beginning and 79.6MB in the end (delta: -32.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-19 04:13:50,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.06ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:13:50,246 INFO L158 Benchmark]: Boogie Preprocessor took 60.08ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 76.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:13:50,246 INFO L158 Benchmark]: RCFGBuilder took 599.19ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 60.0MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 04:13:50,247 INFO L158 Benchmark]: TraceAbstraction took 1294.26ms. Allocated memory is still 104.9MB. Free memory was 59.5MB in the beginning and 59.1MB in the end (delta: 403.8kB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-11-19 04:13:50,248 INFO L158 Benchmark]: Witness Printer took 4.13ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 58.6MB in the end (delta: 525.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:13:50,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.24ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 47.5MB in the beginning and 79.6MB in the end (delta: -32.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.06ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.08ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 76.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 599.19ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 60.0MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1294.26ms. Allocated memory is still 104.9MB. Free memory was 59.5MB in the beginning and 59.1MB in the end (delta: 403.8kB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 4.13ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 58.6MB in the end (delta: 525.0kB). 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L17] double b1[2] = { 1.470767736573, 0.5522073405779 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L19] double b2[2] = { 1.742319554830, 0.820939679242 }; [L21] double D1[2], D2[2]; [L22] double P, X; VAL [A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, D1={10:0}, D2={9:0}, P={7:0}, X={14:0}] [L43] D1[0] = 0. [L43] D1[1] = 0. [L44] D2[0] = 0. [L44] D2[1] = 0. [L45] P = 0. VAL [A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, D1={10:0}, D2={9:0}, P={7:0}, X={14:0}] [L47] COND TRUE 1 [L49] X = __VERIFIER_nondet_double() [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. VAL [\read(X)=63, \read(X)=63, A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, D1={10:0}, D2={9:0}, P={7:0}, X={14:0}] [L50] CALL assume_abort_if_not(X >= -10. && X <= 10.) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, cond=1, D1={10:0}, D2={9:0}, P={7:0}, X={14:0}] [L50] RET assume_abort_if_not(X >= -10. && X <= 10.) [L52] CALL iir4(&X, &P) [L26] double x1, y1, t1, t2; [L28] EXPR \read(*x) [L28] x1 = 0.0117749388721091 * *x [L30] EXPR b1[0] [L30] EXPR D1[0] [L30] EXPR b1[1] [L30] EXPR D1[1] [L30] t1 = x1 + b1[0]*D1[0] - b1[1]*D1[1] [L31] EXPR A1[0] [L31] EXPR A1[1] [L31] EXPR D1[0] [L31] EXPR A1[2] [L31] EXPR D1[1] [L31] y1 = A1[0]*t1 - A1[1]*D1[0] + A1[2]*D1[1] [L32] EXPR D1[0] [L32] D1[1] = D1[0] [L33] D1[0] = t1 [L35] EXPR b2[0] [L35] EXPR D2[0] [L35] EXPR b2[1] [L35] EXPR D2[1] [L35] t2 = y1 + b2[0]*D2[0] - b2[1]*D2[1] [L36] EXPR A2[0] [L36] EXPR A2[1] [L36] EXPR D2[0] [L36] EXPR A2[2] [L36] EXPR D2[1] [L36] *y = A2[0]*t2 - A2[1]*D2[0] + A2[2]*D2[1] [L37] EXPR D2[0] [L37] D2[1] = D2[0] [L38] D2[0] = t2 VAL [A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, D1={10:0}, D2={9:0}, P={7:0}, t1=51, t2=58, x={14:0}, x={14:0}, X={14:0}, y={7:0}, y={7:0}] [L52] RET iir4(&X, &P) [L54] EXPR \read(P) [L54] EXPR P >= -1e30 && P <= 1e30 VAL [\read(P)=59, A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, D1={10:0}, D2={9:0}, P={7:0}, P >= -1e30 && P <= 1e30=0, X={14:0}] [L54] CALL __VERIFIER_assert(P >= -1e30 && P <= 1e30) [L13] COND TRUE !(cond) VAL [\old(cond)=0, A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, cond=0, D1={10:0}, D2={9:0}, P={7:0}, X={14:0}] [L13] reach_error() VAL [\old(cond)=0, A1={11:0}, A2={6:0}, b1={5:0}, b2={4:0}, cond=0, D1={10:0}, D2={9:0}, P={7:0}, X={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, 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, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2021-11-19 04:13:50,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/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_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:13:52,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:13:52,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:13:53,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:13:53,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:13:53,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:13:53,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:13:53,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:13:53,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:13:53,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:13:53,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:13:53,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:13:53,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:13:53,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:13:53,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:13:53,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:13:53,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:13:53,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:13:53,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:13:53,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:13:53,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:13:53,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:13:53,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:13:53,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:13:53,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:13:53,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:13:53,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:13:53,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:13:53,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:13:53,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:13:53,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:13:53,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:13:53,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:13:53,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:13:53,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:13:53,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:13:53,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:13:53,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:13:53,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:13:53,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:13:53,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:13:53,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 04:13:53,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:13:53,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:13:53,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:13:53,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:13:53,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:13:53,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:13:53,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:13:53,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:13:53,222 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:13:53,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:13:53,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:13:53,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:13:53,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:13:53,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:13:53,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:13:53,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:13:53,225 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:13:53,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:13:53,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:13:53,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:13:53,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:13:53,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:13:53,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:13:53,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:13:53,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:13:53,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:13:53,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:13:53,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:13:53,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:13:53,229 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:13:53,229 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:13:53,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:13:53,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:13:53,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:13:53,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:13:53,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:13:53,231 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_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-19 04:13:53,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:13:53,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:13:53,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:13:53,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:13:53,642 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:13:53,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-19 04:13:53,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/f198f6bae/c3621bdfc5844150b1c74be52b2d0a74/FLAGac22fe882 [2021-11-19 04:13:54,336 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:13:54,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-19 04:13:54,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/f198f6bae/c3621bdfc5844150b1c74be52b2d0a74/FLAGac22fe882 [2021-11-19 04:13:54,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/data/f198f6bae/c3621bdfc5844150b1c74be52b2d0a74 [2021-11-19 04:13:54,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:13:54,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:13:54,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:13:54,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:13:54,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:13:54,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:54" (1/1) ... [2021-11-19 04:13:54,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a217eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:54, skipping insertion in model container [2021-11-19 04:13:54,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:54" (1/1) ... [2021-11-19 04:13:54,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:13:54,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:13:54,885 WARN L230 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_f8f84065-3775-418c-940d-9b7197f05fa4/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-19 04:13:54,915 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:13:54,935 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:13:54,962 WARN L230 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_f8f84065-3775-418c-940d-9b7197f05fa4/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-19 04:13:55,026 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:13:55,077 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:13:55,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55 WrapperNode [2021-11-19 04:13:55,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:13:55,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:13:55,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:13:55,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:13:55,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,172 INFO L137 Inliner]: procedures = 20, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2021-11-19 04:13:55,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:13:55,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:13:55,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:13:55,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:13:55,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:13:55,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:13:55,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:13:55,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:13:55,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (1/1) ... [2021-11-19 04:13:55,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:13:55,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:13:55,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:13:55,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:13:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:13:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 04:13:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-19 04:13:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:13:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:13:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-19 04:13:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:13:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:13:55,447 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:13:55,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:13:58,657 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:13:58,664 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:13:58,665 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:13:58,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:58 BoogieIcfgContainer [2021-11-19 04:13:58,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:13:58,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:13:58,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:13:58,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:13:58,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:13:54" (1/3) ... [2021-11-19 04:13:58,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421adc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:58, skipping insertion in model container [2021-11-19 04:13:58,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:55" (2/3) ... [2021-11-19 04:13:58,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421adc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:58, skipping insertion in model container [2021-11-19 04:13:58,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:58" (3/3) ... [2021-11-19 04:13:58,677 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-19 04:13:58,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:13:58,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:13:58,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:13:58,768 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=PETRI_NET, 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 [2021-11-19 04:13:58,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:13:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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) [2021-11-19 04:13:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:13:58,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:58,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:13:58,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:13:58,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1398280527, now seen corresponding path program 1 times [2021-11-19 04:13:58,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:13:58,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123840534] [2021-11-19 04:13:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:58,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:13:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:13:58,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:13:58,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:14:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:14:02,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:14:02,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:14:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:14:02,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:14:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:14:02,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:14:02,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123840534] [2021-11-19 04:14:02,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123840534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:14:02,720 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:14:02,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:14:02,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544408116] [2021-11-19 04:14:02,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:14:02,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:14:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:14:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:14:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:14:02,761 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:14:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:14:02,777 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-19 04:14:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:14:02,779 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 04:14:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:14:02,787 INFO L225 Difference]: With dead ends: 30 [2021-11-19 04:14:02,787 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 04:14:02,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:14:02,794 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:14:02,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:14:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 04:14:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 04:14:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-11-19 04:14:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-19 04:14:02,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-19 04:14:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:14:02,830 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-19 04:14:02,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:14:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-19 04:14:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:14:02,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:14:02,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:14:02,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:14:03,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:14:03,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:14:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:14:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash 376726835, now seen corresponding path program 1 times [2021-11-19 04:14:03,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:14:03,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510058974] [2021-11-19 04:14:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:14:03,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:14:03,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:14:03,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:14:03,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:14:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:14:06,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:14:06,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:14:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:14:06,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:14:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:14:06,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:14:06,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510058974] [2021-11-19 04:14:06,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510058974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:14:06,978 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:14:06,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:14:06,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285049425] [2021-11-19 04:14:06,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:14:06,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:14:06,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:14:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:14:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:14:06,981 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:14:10,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:14:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:14:10,150 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-19 04:14:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:14:10,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 04:14:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:14:10,490 INFO L225 Difference]: With dead ends: 28 [2021-11-19 04:14:10,490 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 04:14:10,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:14:10,492 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:14:10,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 04:14:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 04:14:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 04:14:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:14:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-19 04:14:10,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-19 04:14:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:14:10,497 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-19 04:14:10,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:14:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-19 04:14:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:14:10,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:14:10,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:14:10,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:14:10,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:14:10,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:14:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:14:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -303331535, now seen corresponding path program 1 times [2021-11-19 04:14:10,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:14:10,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092537856] [2021-11-19 04:14:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:14:10,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:14:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:14:10,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:14:10,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:17:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:17:58,642 WARN L261 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-19 04:17:58,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:17:59,191 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-19 04:17:59,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 110 [2021-11-19 04:18:05,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,866 INFO L244 Elim1Store]: Index analysis took 184 ms [2021-11-19 04:18:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:05,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:05,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:05,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:05,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:05,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:05,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:06,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:06,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:09,842 INFO L354 Elim1Store]: treesize reduction 1208, result has 10.7 percent of original size [2021-11-19 04:18:09,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 25 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 330 case distinctions, treesize of input 639 treesize of output 589 [2021-11-19 04:18:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,063 INFO L244 Elim1Store]: Index analysis took 1081 ms [2021-11-19 04:18:17,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:17,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:17,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:18,960 INFO L354 Elim1Store]: treesize reduction 608, result has 11.8 percent of original size [2021-11-19 04:18:18,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 30 select indices, 30 select index equivalence classes, 32 disjoint index pairs (out of 435 index pairs), introduced 30 new quantified variables, introduced 308 case distinctions, treesize of input 458 treesize of output 548 [2021-11-19 04:18:27,577 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 04:18:36,599 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 04:18:45,748 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 04:18:54,645 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 04:18:56,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:56,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:18:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:18:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:22:23,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-19 04:22:23,151 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 04:22:23,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:23,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092537856] [2021-11-19 04:22:23,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 04:22:23,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [854201203] [2021-11-19 04:22:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:23,161 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 04:22:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/cvc4 [2021-11-19 04:22:23,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 04:22:23,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 04:25:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:23,726 WARN L261 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-19 04:25:23,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-19 04:25:23,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725320528] [2021-11-19 04:25:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:23,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:25:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:25:23,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:25:23,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f84065-3775-418c-940d-9b7197f05fa4/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process