./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.opt.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_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/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 95c59b8bce91cc353bb9f27434d4d89596b76ae6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:47:45,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:47:45,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:47:45,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:47:45,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:47:45,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:47:45,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:47:45,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:47:45,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:47:45,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:47:45,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:47:45,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:47:45,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:47:45,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:47:45,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:47:45,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:47:45,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:47:45,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:47:45,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:47:45,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:47:45,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:47:45,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:47:45,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:47:45,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:47:45,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:47:45,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:47:45,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:47:45,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:47:45,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:47:45,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:47:45,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:47:45,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:47:45,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:47:45,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:47:45,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:47:45,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:47:45,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:47:45,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:47:45,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:47:45,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:47:45,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:47:45,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:47:45,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:47:45,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:47:45,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:47:45,768 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:47:45,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:47:45,769 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:47:45,769 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:47:45,770 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:47:45,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:47:45,770 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:47:45,770 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:47:45,771 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:47:45,771 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:47:45,771 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:47:45,772 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:47:45,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:47:45,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:47:45,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:47:45,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:47:45,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:47:45,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:47:45,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:47:45,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:47:45,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:47:45,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:47:45,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:47:45,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:47:45,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:47:45,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:47:45,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:47:45,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:47:45,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:47:45,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:47:45,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:47:45,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:47:45,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:47:45,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:47:45,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:47:45,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:47:45,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:47:45,779 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_6714c46d-08e5-4f08-9474-32a39c595f65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95c59b8bce91cc353bb9f27434d4d89596b76ae6 [2020-11-22 12:47:46,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:47:46,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:47:46,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:47:46,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:47:46,091 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:47:46,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i [2020-11-22 12:47:46,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/data/d54ea22bb/e19510b5090645a695c45b3313c11379/FLAG38eddc9a6 [2020-11-22 12:47:46,808 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:47:46,809 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/sv-benchmarks/c/pthread-wmm/safe028_pso.opt.i [2020-11-22 12:47:46,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/data/d54ea22bb/e19510b5090645a695c45b3313c11379/FLAG38eddc9a6 [2020-11-22 12:47:47,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/data/d54ea22bb/e19510b5090645a695c45b3313c11379 [2020-11-22 12:47:47,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:47:47,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:47:47,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:47,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:47:47,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:47:47,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79000ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47, skipping insertion in model container [2020-11-22 12:47:47,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:47:47,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:47,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:47,604 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:47:47,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:47,758 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:47:47,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47 WrapperNode [2020-11-22 12:47:47,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:47,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:47,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:47:47,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:47:47,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:47,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:47:47,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:47:47,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:47:47,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... [2020-11-22 12:47:47,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:47:47,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:47:47,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:47:47,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:47:47,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/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 12:47:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:47:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:47:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:47:47,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:47:47,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:47:47,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:47:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:47:47,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:47:47,997 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 12:47:48,485 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:47:48,485 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:47:48,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:48 BoogieIcfgContainer [2020-11-22 12:47:48,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:47:48,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:47:48,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:47:48,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:47:48,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:47:47" (1/3) ... [2020-11-22 12:47:48,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3b270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:48, skipping insertion in model container [2020-11-22 12:47:48,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:47" (2/3) ... [2020-11-22 12:47:48,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3b270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:48, skipping insertion in model container [2020-11-22 12:47:48,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:48" (3/3) ... [2020-11-22 12:47:48,498 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2020-11-22 12:47:48,511 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:47:48,512 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:47:48,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:47:48,518 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:47:48,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,589 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,594 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:47:48,596 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:47:48,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:47:48,643 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:47:48,643 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:47:48,643 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:47:48,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:47:48,644 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:47:48,644 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:47:48,644 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:47:48,644 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:47:48,664 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:47:48,666 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-22 12:47:48,670 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-22 12:47:48,673 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-22 12:47:48,764 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-22 12:47:48,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:47:48,769 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-22 12:47:48,774 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-22 12:47:50,523 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-22 12:47:50,961 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-22 12:47:51,575 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-22 12:47:51,807 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-11-22 12:47:51,807 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-22 12:47:51,815 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-22 12:47:51,846 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-11-22 12:47:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-11-22 12:47:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:47:51,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:51,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:51,855 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash -831263322, now seen corresponding path program 1 times [2020-11-22 12:47:51,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:51,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88868734] [2020-11-22 12:47:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:52,228 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 12:47:52,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88868734] [2020-11-22 12:47:52,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:52,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:47:52,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544627542] [2020-11-22 12:47:52,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:52,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:52,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:52,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:52,256 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-11-22 12:47:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:52,327 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-11-22 12:47:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:52,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:47:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:52,351 INFO L225 Difference]: With dead ends: 214 [2020-11-22 12:47:52,354 INFO L226 Difference]: Without dead ends: 166 [2020-11-22 12:47:52,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:47:52,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-22 12:47:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-11-22 12:47:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-22 12:47:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-11-22 12:47:52,444 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-11-22 12:47:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:52,445 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-11-22 12:47:52,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-11-22 12:47:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:47:52,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:52,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:52,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:47:52,447 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash 639961, now seen corresponding path program 1 times [2020-11-22 12:47:52,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:52,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328104181] [2020-11-22 12:47:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:52,530 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 12:47:52,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328104181] [2020-11-22 12:47:52,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:52,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:52,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637227419] [2020-11-22 12:47:52,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:52,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:52,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:52,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:52,533 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-11-22 12:47:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:52,586 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-11-22 12:47:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:52,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:47:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:52,593 INFO L225 Difference]: With dead ends: 202 [2020-11-22 12:47:52,593 INFO L226 Difference]: Without dead ends: 130 [2020-11-22 12:47:52,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 12:47:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-22 12:47:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-22 12:47:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-22 12:47:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-11-22 12:47:52,617 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-11-22 12:47:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:52,618 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-11-22 12:47:52,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-11-22 12:47:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:47:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:52,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:52,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:47:52,620 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash 19828348, now seen corresponding path program 1 times [2020-11-22 12:47:52,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:52,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920122249] [2020-11-22 12:47:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:52,793 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 12:47:52,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920122249] [2020-11-22 12:47:52,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:52,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:52,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880623221] [2020-11-22 12:47:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:52,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:52,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:52,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:52,796 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 4 states. [2020-11-22 12:47:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:52,852 INFO L93 Difference]: Finished difference Result 148 states and 336 transitions. [2020-11-22 12:47:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:47:52,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 12:47:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:52,858 INFO L225 Difference]: With dead ends: 148 [2020-11-22 12:47:52,858 INFO L226 Difference]: Without dead ends: 112 [2020-11-22 12:47:52,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 12:47:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-22 12:47:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-22 12:47:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-22 12:47:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 253 transitions. [2020-11-22 12:47:52,869 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 253 transitions. Word has length 10 [2020-11-22 12:47:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:52,869 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 253 transitions. [2020-11-22 12:47:52,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions. [2020-11-22 12:47:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:47:52,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:52,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:52,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:47:52,871 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 595600524, now seen corresponding path program 1 times [2020-11-22 12:47:52,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:52,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399271401] [2020-11-22 12:47:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:53,020 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 12:47:53,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399271401] [2020-11-22 12:47:53,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:53,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:47:53,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331176110] [2020-11-22 12:47:53,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:47:53,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:53,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:47:53,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:53,022 INFO L87 Difference]: Start difference. First operand 112 states and 253 transitions. Second operand 5 states. [2020-11-22 12:47:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:53,107 INFO L93 Difference]: Finished difference Result 109 states and 227 transitions. [2020-11-22 12:47:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:47:53,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 12:47:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:53,108 INFO L225 Difference]: With dead ends: 109 [2020-11-22 12:47:53,109 INFO L226 Difference]: Without dead ends: 85 [2020-11-22 12:47:53,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:47:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-22 12:47:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-22 12:47:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-22 12:47:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 173 transitions. [2020-11-22 12:47:53,117 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 173 transitions. Word has length 11 [2020-11-22 12:47:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:53,117 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 173 transitions. [2020-11-22 12:47:53,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:47:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 173 transitions. [2020-11-22 12:47:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:47:53,119 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:53,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:53,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:47:53,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:53,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:53,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1088953398, now seen corresponding path program 1 times [2020-11-22 12:47:53,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:53,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603380755] [2020-11-22 12:47:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:53,190 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 12:47:53,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603380755] [2020-11-22 12:47:53,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:53,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:47:53,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837419080] [2020-11-22 12:47:53,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:47:53,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:53,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:47:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:47:53,193 INFO L87 Difference]: Start difference. First operand 85 states and 173 transitions. Second operand 6 states. [2020-11-22 12:47:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:53,261 INFO L93 Difference]: Finished difference Result 80 states and 161 transitions. [2020-11-22 12:47:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:47:53,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 12:47:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:53,263 INFO L225 Difference]: With dead ends: 80 [2020-11-22 12:47:53,263 INFO L226 Difference]: Without dead ends: 72 [2020-11-22 12:47:53,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:47:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-22 12:47:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-22 12:47:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-22 12:47:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 147 transitions. [2020-11-22 12:47:53,271 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 147 transitions. Word has length 13 [2020-11-22 12:47:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:53,271 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 147 transitions. [2020-11-22 12:47:53,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:47:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 147 transitions. [2020-11-22 12:47:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:47:53,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:53,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:53,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:47:53,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:53,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1996779088, now seen corresponding path program 1 times [2020-11-22 12:47:53,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:53,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259295236] [2020-11-22 12:47:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:53,340 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 12:47:53,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259295236] [2020-11-22 12:47:53,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:53,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:47:53,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128904466] [2020-11-22 12:47:53,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:53,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:53,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:53,342 INFO L87 Difference]: Start difference. First operand 72 states and 147 transitions. Second operand 4 states. [2020-11-22 12:47:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:53,365 INFO L93 Difference]: Finished difference Result 85 states and 168 transitions. [2020-11-22 12:47:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:53,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-22 12:47:53,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:53,366 INFO L225 Difference]: With dead ends: 85 [2020-11-22 12:47:53,366 INFO L226 Difference]: Without dead ends: 33 [2020-11-22 12:47:53,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:47:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-22 12:47:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-22 12:47:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 12:47:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-22 12:47:53,368 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-11-22 12:47:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:53,368 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-22 12:47:53,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-22 12:47:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:47:53,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:53,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:53,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:47:53,370 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:47:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash 242478162, now seen corresponding path program 2 times [2020-11-22 12:47:53,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:53,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607870841] [2020-11-22 12:47:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:53,412 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 12:47:53,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607870841] [2020-11-22 12:47:53,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:53,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:47:53,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123355575] [2020-11-22 12:47:53,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:53,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:53,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:53,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:53,415 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-11-22 12:47:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:53,434 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-22 12:47:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:53,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-22 12:47:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:53,435 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:47:53,435 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:47:53,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:47:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:47:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:47:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:47:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:47:53,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-22 12:47:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:53,436 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:47:53,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:47:53,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:47:53,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:47:53,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:47:53 BasicIcfg [2020-11-22 12:47:53,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:47:53,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:47:53,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:47:53,441 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:47:53,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:48" (3/4) ... [2020-11-22 12:47:53,445 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:47:53,452 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:47:53,452 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:47:53,452 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:47:53,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:47:53,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:47:53,459 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:47:53,459 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:47:53,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6714c46d-08e5-4f08-9474-32a39c595f65/bin/utaipan/witness.graphml [2020-11-22 12:47:53,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:47:53,519 INFO L168 Benchmark]: Toolchain (without parser) took 6460.64 ms. Allocated memory was 92.3 MB in the beginning and 155.2 MB in the end (delta: 62.9 MB). Free memory was 62.1 MB in the beginning and 79.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:53,520 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:53,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 61.9 MB in the beginning and 75.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:53,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.26 ms. Allocated memory is still 119.5 MB. Free memory was 75.5 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:53,522 INFO L168 Benchmark]: Boogie Preprocessor took 62.18 ms. Allocated memory is still 119.5 MB. Free memory was 73.8 MB in the beginning and 72.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:53,523 INFO L168 Benchmark]: RCFGBuilder took 571.65 ms. Allocated memory is still 119.5 MB. Free memory was 72.2 MB in the beginning and 84.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:53,524 INFO L168 Benchmark]: TraceAbstraction took 4950.46 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 83.3 MB in the beginning and 81.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:53,524 INFO L168 Benchmark]: Witness Printer took 75.68 ms. Allocated memory is still 155.2 MB. Free memory was 81.7 MB in the beginning and 79.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:53,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 61.9 MB in the beginning and 75.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.26 ms. Allocated memory is still 119.5 MB. Free memory was 75.5 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.18 ms. Allocated memory is still 119.5 MB. Free memory was 73.8 MB in the beginning and 72.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 571.65 ms. Allocated memory is still 119.5 MB. Free memory was 72.2 MB in the beginning and 84.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4950.46 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 83.3 MB in the beginning and 81.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. * Witness Printer took 75.68 ms. Allocated memory is still 155.2 MB. Free memory was 81.7 MB in the beginning and 79.6 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 1004 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 85 PlacesBefore, 30 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 124 SDtfs, 127 SDslu, 166 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...