./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78dd3e229728265c0b15a8284c5b0b9fe0d28799 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:55:51,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:55:51,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:55:51,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:55:51,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:55:51,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:55:51,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:55:51,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:55:51,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:55:51,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:55:51,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:55:51,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:55:51,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:55:51,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:55:51,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:55:51,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:55:51,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:55:51,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:55:51,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:55:51,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:55:51,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:55:51,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:55:51,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:55:51,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:55:51,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:55:51,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:55:51,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:55:51,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:55:51,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:55:51,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:55:51,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:55:51,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:55:51,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:55:51,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:55:51,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:55:51,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:55:51,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:55:51,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:55:51,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:55:51,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:55:51,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:55:51,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:55:51,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:55:51,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:55:51,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:55:51,633 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:55:51,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:55:51,634 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:55:51,634 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:55:51,634 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:55:51,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:55:51,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:55:51,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:55:51,635 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:55:51,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:55:51,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:55:51,636 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:55:51,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:55:51,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:55:51,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:55:51,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:55:51,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:55:51,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:55:51,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:55:51,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:55:51,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:55:51,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:55:51,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:55:51,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:55:51,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:55:51,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:55:51,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:55:51,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:55:51,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:51,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:55:51,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:55:51,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:55:51,641 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:55:51,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:55:51,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:55:51,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:55:51,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:55:51,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78dd3e229728265c0b15a8284c5b0b9fe0d28799 [2020-11-22 12:55:51,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:55:51,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:55:51,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:55:51,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:55:51,921 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:55:51,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/lamport.i [2020-11-22 12:55:51,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/data/13f33424a/bb698000872c46409ad476b0e3a3ffa6/FLAG57f4f127c [2020-11-22 12:55:52,475 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:55:52,475 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/sv-benchmarks/c/pthread-atomic/lamport.i [2020-11-22 12:55:52,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/data/13f33424a/bb698000872c46409ad476b0e3a3ffa6/FLAG57f4f127c [2020-11-22 12:55:52,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/data/13f33424a/bb698000872c46409ad476b0e3a3ffa6 [2020-11-22 12:55:52,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:55:52,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:55:52,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:52,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:55:52,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:55:52,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:52" (1/1) ... [2020-11-22 12:55:52,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577e6327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:52, skipping insertion in model container [2020-11-22 12:55:52,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:52" (1/1) ... [2020-11-22 12:55:52,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:55:52,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:55:53,141 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-22 12:55:53,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:53,288 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:55:53,303 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-22 12:55:53,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:53,436 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:55:53,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53 WrapperNode [2020-11-22 12:55:53,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:53,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:53,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:55:53,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:55:53,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:53,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:55:53,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:55:53,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:55:53,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... [2020-11-22 12:55:53,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:55:53,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:55:53,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:55:53,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:55:53,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:55:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-22 12:55:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-22 12:55:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-22 12:55:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-22 12:55:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:55:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:55:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:55:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:55:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:55:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:55:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:55:53,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:55:53,669 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:55:54,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:55:54,329 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 12:55:54,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:54 BoogieIcfgContainer [2020-11-22 12:55:54,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:55:54,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:55:54,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:55:54,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:55:54,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:55:52" (1/3) ... [2020-11-22 12:55:54,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482f5157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:54, skipping insertion in model container [2020-11-22 12:55:54,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:53" (2/3) ... [2020-11-22 12:55:54,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482f5157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:54, skipping insertion in model container [2020-11-22 12:55:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:54" (3/3) ... [2020-11-22 12:55:54,343 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-11-22 12:55:54,356 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:55:54,357 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:55:54,361 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 12:55:54,362 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:55:54,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,415 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,417 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,417 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,418 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,418 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,419 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,419 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,419 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,422 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,423 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,424 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,427 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,427 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,449 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,449 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,450 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,450 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,450 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,450 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,450 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,451 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:54,496 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-22 12:55:54,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:55:54,542 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:55:54,542 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:55:54,543 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:55:54,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:55:54,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:55:54,544 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:55:54,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:55:54,545 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:55:54,561 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:55:54,563 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 133 transitions, 288 flow [2020-11-22 12:55:54,566 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 133 transitions, 288 flow [2020-11-22 12:55:54,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 112 places, 133 transitions, 288 flow [2020-11-22 12:55:54,648 INFO L129 PetriNetUnfolder]: 27/133 cut-off events. [2020-11-22 12:55:54,648 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-22 12:55:54,657 INFO L80 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 133 events. 27/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 324 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2020-11-22 12:55:54,666 INFO L116 LiptonReduction]: Number of co-enabled transitions 5640 [2020-11-22 12:55:55,309 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-22 12:55:56,826 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-22 12:55:57,421 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-11-22 12:55:57,559 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-22 12:55:57,575 INFO L131 LiptonReduction]: Checked pairs total: 15865 [2020-11-22 12:55:57,575 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-22 12:55:57,579 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 69 transitions, 160 flow [2020-11-22 12:55:57,642 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 879 states. [2020-11-22 12:55:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states. [2020-11-22 12:55:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:55:57,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:57,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:55:57,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash 18098443, now seen corresponding path program 1 times [2020-11-22 12:55:57,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:57,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214281731] [2020-11-22 12:55:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:57,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214281731] [2020-11-22 12:55:57,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:57,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:57,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037517677] [2020-11-22 12:55:57,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:55:57,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:55:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:55:57,882 INFO L87 Difference]: Start difference. First operand 879 states. Second operand 2 states. [2020-11-22 12:55:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:57,946 INFO L93 Difference]: Finished difference Result 879 states and 2535 transitions. [2020-11-22 12:55:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:55:57,947 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 12:55:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:57,976 INFO L225 Difference]: With dead ends: 879 [2020-11-22 12:55:57,976 INFO L226 Difference]: Without dead ends: 840 [2020-11-22 12:55:57,977 INFO L677 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 [2020-11-22 12:55:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-11-22 12:55:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2020-11-22 12:55:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-11-22 12:55:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2450 transitions. [2020-11-22 12:55:58,090 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2450 transitions. Word has length 4 [2020-11-22 12:55:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:58,090 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 2450 transitions. [2020-11-22 12:55:58,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:55:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2450 transitions. [2020-11-22 12:55:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:55:58,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:58,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:58,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:55:58,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1270916706, now seen corresponding path program 1 times [2020-11-22 12:55:58,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:58,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182328546] [2020-11-22 12:55:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:58,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182328546] [2020-11-22 12:55:58,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:58,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:58,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385107174] [2020-11-22 12:55:58,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:58,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:58,186 INFO L87 Difference]: Start difference. First operand 840 states and 2450 transitions. Second operand 3 states. [2020-11-22 12:55:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:58,250 INFO L93 Difference]: Finished difference Result 841 states and 2411 transitions. [2020-11-22 12:55:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:58,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 12:55:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:58,261 INFO L225 Difference]: With dead ends: 841 [2020-11-22 12:55:58,261 INFO L226 Difference]: Without dead ends: 706 [2020-11-22 12:55:58,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-11-22 12:55:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 688. [2020-11-22 12:55:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-11-22 12:55:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2024 transitions. [2020-11-22 12:55:58,312 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2024 transitions. Word has length 10 [2020-11-22 12:55:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:58,313 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 2024 transitions. [2020-11-22 12:55:58,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2024 transitions. [2020-11-22 12:55:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:55:58,317 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:58,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:58,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:55:58,317 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash -890786191, now seen corresponding path program 1 times [2020-11-22 12:55:58,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:58,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684717306] [2020-11-22 12:55:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:58,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684717306] [2020-11-22 12:55:58,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:58,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:58,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361118108] [2020-11-22 12:55:58,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:58,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:58,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:58,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:58,375 INFO L87 Difference]: Start difference. First operand 688 states and 2024 transitions. Second operand 3 states. [2020-11-22 12:55:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:58,441 INFO L93 Difference]: Finished difference Result 665 states and 1940 transitions. [2020-11-22 12:55:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:58,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-22 12:55:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:58,447 INFO L225 Difference]: With dead ends: 665 [2020-11-22 12:55:58,447 INFO L226 Difference]: Without dead ends: 524 [2020-11-22 12:55:58,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-11-22 12:55:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2020-11-22 12:55:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-11-22 12:55:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1570 transitions. [2020-11-22 12:55:58,488 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1570 transitions. Word has length 11 [2020-11-22 12:55:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:58,489 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 1570 transitions. [2020-11-22 12:55:58,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1570 transitions. [2020-11-22 12:55:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:55:58,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:58,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:58,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:55:58,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:58,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1786836014, now seen corresponding path program 1 times [2020-11-22 12:55:58,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:58,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510551756] [2020-11-22 12:55:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:58,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510551756] [2020-11-22 12:55:58,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:58,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580020083] [2020-11-22 12:55:58,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:58,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:58,630 INFO L87 Difference]: Start difference. First operand 524 states and 1570 transitions. Second operand 4 states. [2020-11-22 12:55:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:58,776 INFO L93 Difference]: Finished difference Result 1056 states and 3176 transitions. [2020-11-22 12:55:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:58,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 12:55:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:58,782 INFO L225 Difference]: With dead ends: 1056 [2020-11-22 12:55:58,782 INFO L226 Difference]: Without dead ends: 572 [2020-11-22 12:55:58,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-11-22 12:55:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 554. [2020-11-22 12:55:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-11-22 12:55:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1650 transitions. [2020-11-22 12:55:58,804 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1650 transitions. Word has length 18 [2020-11-22 12:55:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:58,805 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 1650 transitions. [2020-11-22 12:55:58,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:58,805 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1650 transitions. [2020-11-22 12:55:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:55:58,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:58,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:58,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:55:58,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:58,809 INFO L82 PathProgramCache]: Analyzing trace with hash 395464812, now seen corresponding path program 2 times [2020-11-22 12:55:58,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:58,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31519029] [2020-11-22 12:55:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:58,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31519029] [2020-11-22 12:55:58,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:58,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:58,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489941387] [2020-11-22 12:55:58,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:58,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:58,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:58,906 INFO L87 Difference]: Start difference. First operand 554 states and 1650 transitions. Second operand 4 states. [2020-11-22 12:55:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:58,999 INFO L93 Difference]: Finished difference Result 1650 states and 4884 transitions. [2020-11-22 12:55:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:58,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 12:55:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,013 INFO L225 Difference]: With dead ends: 1650 [2020-11-22 12:55:59,014 INFO L226 Difference]: Without dead ends: 1650 [2020-11-22 12:55:59,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-11-22 12:55:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 652. [2020-11-22 12:55:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-11-22 12:55:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1929 transitions. [2020-11-22 12:55:59,051 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1929 transitions. Word has length 18 [2020-11-22 12:55:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,051 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 1929 transitions. [2020-11-22 12:55:59,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1929 transitions. [2020-11-22 12:55:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:55:59,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:59,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:55:59,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,054 INFO L82 PathProgramCache]: Analyzing trace with hash -882163476, now seen corresponding path program 3 times [2020-11-22 12:55:59,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985609019] [2020-11-22 12:55:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:59,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985609019] [2020-11-22 12:55:59,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:59,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:59,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672609944] [2020-11-22 12:55:59,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:59,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:59,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:59,136 INFO L87 Difference]: Start difference. First operand 652 states and 1929 transitions. Second operand 3 states. [2020-11-22 12:55:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:59,195 INFO L93 Difference]: Finished difference Result 1006 states and 2918 transitions. [2020-11-22 12:55:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:59,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-22 12:55:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,204 INFO L225 Difference]: With dead ends: 1006 [2020-11-22 12:55:59,204 INFO L226 Difference]: Without dead ends: 1006 [2020-11-22 12:55:59,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-11-22 12:55:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 686. [2020-11-22 12:55:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-11-22 12:55:59,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2016 transitions. [2020-11-22 12:55:59,238 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2016 transitions. Word has length 18 [2020-11-22 12:55:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,239 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 2016 transitions. [2020-11-22 12:55:59,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2016 transitions. [2020-11-22 12:55:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:55:59,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:59,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:55:59,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1835455792, now seen corresponding path program 1 times [2020-11-22 12:55:59,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109604583] [2020-11-22 12:55:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:59,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109604583] [2020-11-22 12:55:59,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:59,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:59,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013298990] [2020-11-22 12:55:59,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:59,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:59,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:59,285 INFO L87 Difference]: Start difference. First operand 686 states and 2016 transitions. Second operand 3 states. [2020-11-22 12:55:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:59,344 INFO L93 Difference]: Finished difference Result 818 states and 2370 transitions. [2020-11-22 12:55:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:59,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-22 12:55:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,349 INFO L225 Difference]: With dead ends: 818 [2020-11-22 12:55:59,350 INFO L226 Difference]: Without dead ends: 536 [2020-11-22 12:55:59,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-11-22 12:55:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 462. [2020-11-22 12:55:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-11-22 12:55:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1260 transitions. [2020-11-22 12:55:59,367 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1260 transitions. Word has length 18 [2020-11-22 12:55:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,367 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 1260 transitions. [2020-11-22 12:55:59,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1260 transitions. [2020-11-22 12:55:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 12:55:59,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:59,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:55:59,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1818565130, now seen corresponding path program 1 times [2020-11-22 12:55:59,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243770407] [2020-11-22 12:55:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:59,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243770407] [2020-11-22 12:55:59,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:59,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:59,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395510944] [2020-11-22 12:55:59,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:59,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:59,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:59,418 INFO L87 Difference]: Start difference. First operand 462 states and 1260 transitions. Second operand 4 states. [2020-11-22 12:55:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:59,457 INFO L93 Difference]: Finished difference Result 534 states and 1408 transitions. [2020-11-22 12:55:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:59,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-22 12:55:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,461 INFO L225 Difference]: With dead ends: 534 [2020-11-22 12:55:59,461 INFO L226 Difference]: Without dead ends: 514 [2020-11-22 12:55:59,462 INFO L677 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 [2020-11-22 12:55:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-11-22 12:55:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 474. [2020-11-22 12:55:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-11-22 12:55:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1268 transitions. [2020-11-22 12:55:59,480 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1268 transitions. Word has length 21 [2020-11-22 12:55:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,480 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 1268 transitions. [2020-11-22 12:55:59,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1268 transitions. [2020-11-22 12:55:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:55:59,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:59,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:55:59,483 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,483 INFO L82 PathProgramCache]: Analyzing trace with hash -865494114, now seen corresponding path program 1 times [2020-11-22 12:55:59,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359640607] [2020-11-22 12:55:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:59,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359640607] [2020-11-22 12:55:59,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:59,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:59,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995782703] [2020-11-22 12:55:59,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:59,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:59,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:59,539 INFO L87 Difference]: Start difference. First operand 474 states and 1268 transitions. Second operand 4 states. [2020-11-22 12:55:59,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:59,576 INFO L93 Difference]: Finished difference Result 396 states and 1013 transitions. [2020-11-22 12:55:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:59,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 12:55:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,580 INFO L225 Difference]: With dead ends: 396 [2020-11-22 12:55:59,580 INFO L226 Difference]: Without dead ends: 370 [2020-11-22 12:55:59,580 INFO L677 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 [2020-11-22 12:55:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-22 12:55:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 342. [2020-11-22 12:55:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-11-22 12:55:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 888 transitions. [2020-11-22 12:55:59,593 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 888 transitions. Word has length 22 [2020-11-22 12:55:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,595 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 888 transitions. [2020-11-22 12:55:59,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 888 transitions. [2020-11-22 12:55:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 12:55:59,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:59,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:55:59,600 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1091650042, now seen corresponding path program 1 times [2020-11-22 12:55:59,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140477952] [2020-11-22 12:55:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:59,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140477952] [2020-11-22 12:55:59,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:59,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:59,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943008751] [2020-11-22 12:55:59,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:59,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:59,642 INFO L87 Difference]: Start difference. First operand 342 states and 888 transitions. Second operand 4 states. [2020-11-22 12:55:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:59,696 INFO L93 Difference]: Finished difference Result 520 states and 1309 transitions. [2020-11-22 12:55:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:59,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-22 12:55:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,700 INFO L225 Difference]: With dead ends: 520 [2020-11-22 12:55:59,700 INFO L226 Difference]: Without dead ends: 460 [2020-11-22 12:55:59,701 INFO L677 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 [2020-11-22 12:55:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-11-22 12:55:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 322. [2020-11-22 12:55:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-11-22 12:55:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 825 transitions. [2020-11-22 12:55:59,713 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 825 transitions. Word has length 25 [2020-11-22 12:55:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,713 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 825 transitions. [2020-11-22 12:55:59,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 825 transitions. [2020-11-22 12:55:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 12:55:59,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:59,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:59,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:55:59,715 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:59,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1833026170, now seen corresponding path program 2 times [2020-11-22 12:55:59,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:59,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318654954] [2020-11-22 12:55:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:59,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318654954] [2020-11-22 12:55:59,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:59,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:59,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98776836] [2020-11-22 12:55:59,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:59,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:59,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:59,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:59,764 INFO L87 Difference]: Start difference. First operand 322 states and 825 transitions. Second operand 4 states. [2020-11-22 12:55:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:59,793 INFO L93 Difference]: Finished difference Result 218 states and 577 transitions. [2020-11-22 12:55:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:59,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-22 12:55:59,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:59,794 INFO L225 Difference]: With dead ends: 218 [2020-11-22 12:55:59,794 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:55:59,795 INFO L677 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 [2020-11-22 12:55:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:55:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:55:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:55:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:55:59,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-22 12:55:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:59,795 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:55:59,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:55:59,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:55:59,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 12:55:59,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:55:59 BasicIcfg [2020-11-22 12:55:59,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:55:59,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:55:59,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:55:59,801 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:55:59,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:54" (3/4) ... [2020-11-22 12:55:59,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:55:59,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-11-22 12:55:59,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-22 12:55:59,813 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-22 12:55:59,813 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:55:59,813 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:59,814 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:59,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fae85e3f-f61f-431d-ba20-9dc1b5329717/bin/utaipan/witness.graphml [2020-11-22 12:55:59,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:55:59,864 INFO L168 Benchmark]: Toolchain (without parser) took 7034.53 ms. Allocated memory was 81.8 MB in the beginning and 157.3 MB in the end (delta: 75.5 MB). Free memory was 47.6 MB in the beginning and 118.5 MB in the end (delta: -70.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:59,865 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 54.3 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:59,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.45 ms. Allocated memory is still 81.8 MB. Free memory was 47.4 MB in the beginning and 39.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:59,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.35 ms. Allocated memory is still 81.8 MB. Free memory was 39.0 MB in the beginning and 37.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:59,870 INFO L168 Benchmark]: Boogie Preprocessor took 53.60 ms. Allocated memory is still 81.8 MB. Free memory was 36.9 MB in the beginning and 35.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:59,871 INFO L168 Benchmark]: RCFGBuilder took 765.33 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 35.4 MB in the beginning and 61.5 MB in the end (delta: -26.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:59,872 INFO L168 Benchmark]: TraceAbstraction took 5463.34 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 60.9 MB in the beginning and 120.6 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:59,872 INFO L168 Benchmark]: Witness Printer took 62.83 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 118.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:59,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 54.3 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 604.45 ms. Allocated memory is still 81.8 MB. Free memory was 47.4 MB in the beginning and 39.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.35 ms. Allocated memory is still 81.8 MB. Free memory was 39.0 MB in the beginning and 37.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.60 ms. Allocated memory is still 81.8 MB. Free memory was 36.9 MB in the beginning and 35.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 765.33 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 35.4 MB in the beginning and 61.5 MB in the end (delta: -26.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5463.34 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 60.9 MB in the beginning and 120.6 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 62.83 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 118.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3572 VarBasedMoverChecksPositive, 148 VarBasedMoverChecksNegative, 80 SemBasedMoverChecksPositive, 68 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 826 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 112 PlacesBefore, 56 PlacesAfterwards, 133 TransitionsBefore, 69 TransitionsAfterwards, 5640 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 8 ChoiceCompositions, 92 TotalNumberOfCompositions, 15865 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 106 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 861 SDtfs, 496 SDslu, 795 SDs, 0 SdLazy, 196 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=879occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1634 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 5551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 proved your program to be correct! Received shutdown request...