./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin001_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin001_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/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 08e72c65eb1fc04376b30451871062e62e5e1ff7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:47:34,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:47:34,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:47:34,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:47:34,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:47:34,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:47:34,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:47:34,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:47:34,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:47:34,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:47:34,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:47:34,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:47:34,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:47:34,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:47:34,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:47:34,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:47:34,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:47:34,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:47:34,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:47:34,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:47:34,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:47:34,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:47:34,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:47:34,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:47:34,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:47:34,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:47:34,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:47:34,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:47:34,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:47:34,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:47:34,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:47:34,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:47:34,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:47:34,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:47:34,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:47:34,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:47:34,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:47:34,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:47:34,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:47:34,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:47:34,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:47:34,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:47:34,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:47:34,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:47:34,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:47:34,704 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:47:34,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:47:34,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:47:34,705 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:47:34,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:47:34,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:47:34,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:47:34,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:47:34,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:47:34,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:47:34,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:47:34,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:47:34,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:47:34,709 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_150da64a-47c1-4014-bda1-45c1938f0c68/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08e72c65eb1fc04376b30451871062e62e5e1ff7 [2020-12-09 15:47:34,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:47:34,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:47:34,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:47:34,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:47:34,900 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:47:34,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin001_tso.opt.i [2020-12-09 15:47:34,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/data/78f03987f/b04fff582bee4010be4066bceea9813b/FLAG8aabd5f14 [2020-12-09 15:47:35,338 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:47:35,339 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/sv-benchmarks/c/pthread-wmm/thin001_tso.opt.i [2020-12-09 15:47:35,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/data/78f03987f/b04fff582bee4010be4066bceea9813b/FLAG8aabd5f14 [2020-12-09 15:47:35,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/data/78f03987f/b04fff582bee4010be4066bceea9813b [2020-12-09 15:47:35,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:47:35,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:47:35,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:47:35,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:47:35,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:47:35,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b40a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35, skipping insertion in model container [2020-12-09 15:47:35,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:47:35,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:47:35,525 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/sv-benchmarks/c/pthread-wmm/thin001_tso.opt.i[949,962] [2020-12-09 15:47:35,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:47:35,633 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:47:35,641 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/sv-benchmarks/c/pthread-wmm/thin001_tso.opt.i[949,962] [2020-12-09 15:47:35,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:47:35,725 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:47:35,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35 WrapperNode [2020-12-09 15:47:35,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:47:35,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:47:35,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:47:35,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:47:35,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:47:35,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:47:35,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:47:35,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:47:35,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... [2020-12-09 15:47:35,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:47:35,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:47:35,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:47:35,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:47:35,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/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 [2020-12-09 15:47:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 15:47:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 15:47:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:47:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 15:47:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 15:47:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 15:47:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 15:47:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 15:47:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 15:47:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 15:47:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:47:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 15:47:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:47:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:47:35,830 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 15:47:36,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:47:36,046 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 15:47:36,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:36 BoogieIcfgContainer [2020-12-09 15:47:36,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:47:36,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:47:36,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:47:36,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:47:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:47:35" (1/3) ... [2020-12-09 15:47:36,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16598b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:47:36, skipping insertion in model container [2020-12-09 15:47:36,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:35" (2/3) ... [2020-12-09 15:47:36,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16598b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:47:36, skipping insertion in model container [2020-12-09 15:47:36,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:36" (3/3) ... [2020-12-09 15:47:36,054 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_tso.opt.i [2020-12-09 15:47:36,064 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 15:47:36,064 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:47:36,066 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 15:47:36,066 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 15:47:36,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,093 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,093 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,103 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:47:36,104 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 15:47:36,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 15:47:36,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:47:36,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:47:36,127 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:47:36,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:47:36,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:47:36,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:47:36,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:47:36,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:47:36,135 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 15:47:36,137 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-09 15:47:36,139 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-09 15:47:36,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-09 15:47:36,172 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-09 15:47:36,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 15:47:36,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 15:47:36,177 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 15:47:37,810 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-09 15:47:37,999 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-09 15:47:38,231 INFO L131 LiptonReduction]: Checked pairs total: 2541 [2020-12-09 15:47:38,231 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-09 15:47:38,235 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-09 15:47:38,250 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-09 15:47:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-09 15:47:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 15:47:38,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:38,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:38,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:47:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:38,263 INFO L82 PathProgramCache]: Analyzing trace with hash 995547002, now seen corresponding path program 1 times [2020-12-09 15:47:38,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:38,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732404765] [2020-12-09 15:47:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:38,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732404765] [2020-12-09 15:47:38,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:38,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 15:47:38,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499179183] [2020-12-09 15:47:38,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:47:38,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:38,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:47:38,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:47:38,450 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-09 15:47:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:38,491 INFO L93 Difference]: Finished difference Result 360 states and 1001 transitions. [2020-12-09 15:47:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:47:38,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 15:47:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:38,505 INFO L225 Difference]: With dead ends: 360 [2020-12-09 15:47:38,505 INFO L226 Difference]: Without dead ends: 233 [2020-12-09 15:47:38,506 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 [2020-12-09 15:47:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-12-09 15:47:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-12-09 15:47:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-09 15:47:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 652 transitions. [2020-12-09 15:47:38,548 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 652 transitions. Word has length 8 [2020-12-09 15:47:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:38,549 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 652 transitions. [2020-12-09 15:47:38,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:47:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 652 transitions. [2020-12-09 15:47:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:47:38,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:38,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:38,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:47:38,550 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:47:38,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash 755699245, now seen corresponding path program 1 times [2020-12-09 15:47:38,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:38,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997299896] [2020-12-09 15:47:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:38,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997299896] [2020-12-09 15:47:38,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:38,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:47:38,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119701077] [2020-12-09 15:47:38,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:47:38,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:47:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:47:38,611 INFO L87 Difference]: Start difference. First operand 233 states and 652 transitions. Second operand 4 states. [2020-12-09 15:47:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:38,634 INFO L93 Difference]: Finished difference Result 383 states and 1016 transitions. [2020-12-09 15:47:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:38,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 15:47:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:38,637 INFO L225 Difference]: With dead ends: 383 [2020-12-09 15:47:38,637 INFO L226 Difference]: Without dead ends: 329 [2020-12-09 15:47:38,638 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 [2020-12-09 15:47:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-09 15:47:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 284. [2020-12-09 15:47:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-09 15:47:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 779 transitions. [2020-12-09 15:47:38,656 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 779 transitions. Word has length 9 [2020-12-09 15:47:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:38,656 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 779 transitions. [2020-12-09 15:47:38,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:47:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 779 transitions. [2020-12-09 15:47:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:47:38,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:38,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:38,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:47:38,657 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:47:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash 797195438, now seen corresponding path program 1 times [2020-12-09 15:47:38,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:38,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229460321] [2020-12-09 15:47:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:38,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229460321] [2020-12-09 15:47:38,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:38,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:47:38,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039407684] [2020-12-09 15:47:38,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:47:38,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:38,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:47:38,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:47:38,706 INFO L87 Difference]: Start difference. First operand 284 states and 779 transitions. Second operand 4 states. [2020-12-09 15:47:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:38,717 INFO L93 Difference]: Finished difference Result 269 states and 727 transitions. [2020-12-09 15:47:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:47:38,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 15:47:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:38,719 INFO L225 Difference]: With dead ends: 269 [2020-12-09 15:47:38,719 INFO L226 Difference]: Without dead ends: 269 [2020-12-09 15:47:38,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:47:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-12-09 15:47:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2020-12-09 15:47:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-09 15:47:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 727 transitions. [2020-12-09 15:47:38,729 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 727 transitions. Word has length 9 [2020-12-09 15:47:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:38,729 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 727 transitions. [2020-12-09 15:47:38,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:47:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 727 transitions. [2020-12-09 15:47:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:47:38,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:38,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:38,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:47:38,731 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:47:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1951849563, now seen corresponding path program 1 times [2020-12-09 15:47:38,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:38,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730480188] [2020-12-09 15:47:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:38,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730480188] [2020-12-09 15:47:38,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:38,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:47:38,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150727332] [2020-12-09 15:47:38,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:47:38,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:38,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:47:38,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:47:38,767 INFO L87 Difference]: Start difference. First operand 269 states and 727 transitions. Second operand 4 states. [2020-12-09 15:47:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:38,779 INFO L93 Difference]: Finished difference Result 290 states and 749 transitions. [2020-12-09 15:47:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:47:38,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 15:47:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:38,781 INFO L225 Difference]: With dead ends: 290 [2020-12-09 15:47:38,781 INFO L226 Difference]: Without dead ends: 176 [2020-12-09 15:47:38,781 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 [2020-12-09 15:47:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-09 15:47:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 140. [2020-12-09 15:47:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 15:47:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 339 transitions. [2020-12-09 15:47:38,786 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 339 transitions. Word has length 10 [2020-12-09 15:47:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:38,786 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 339 transitions. [2020-12-09 15:47:38,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:47:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 339 transitions. [2020-12-09 15:47:38,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 15:47:38,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:38,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:38,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 15:47:38,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:47:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1183830127, now seen corresponding path program 1 times [2020-12-09 15:47:38,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:38,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661509444] [2020-12-09 15:47:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:38,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661509444] [2020-12-09 15:47:38,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:38,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:47:38,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251361732] [2020-12-09 15:47:38,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:38,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:38,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:38,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:38,826 INFO L87 Difference]: Start difference. First operand 140 states and 339 transitions. Second operand 5 states. [2020-12-09 15:47:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:38,841 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2020-12-09 15:47:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:47:38,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 15:47:38,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:38,842 INFO L225 Difference]: With dead ends: 158 [2020-12-09 15:47:38,842 INFO L226 Difference]: Without dead ends: 68 [2020-12-09 15:47:38,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:47:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-09 15:47:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-09 15:47:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 15:47:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-12-09 15:47:38,844 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-12-09 15:47:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:38,844 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-12-09 15:47:38,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-12-09 15:47:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:47:38,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:38,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:38,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 15:47:38,845 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:47:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash -936336033, now seen corresponding path program 1 times [2020-12-09 15:47:38,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:38,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414205289] [2020-12-09 15:47:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:38,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414205289] [2020-12-09 15:47:38,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:38,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:47:38,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005452484] [2020-12-09 15:47:38,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:38,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:38,884 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-12-09 15:47:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:38,894 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2020-12-09 15:47:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:47:38,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 15:47:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:38,894 INFO L225 Difference]: With dead ends: 56 [2020-12-09 15:47:38,894 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:47:38,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:47:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:47:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:47:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:47:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:47:38,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 15:47:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:38,895 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:47:38,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:47:38,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:47:38,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 15:47:38,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:47:38 BasicIcfg [2020-12-09 15:47:38,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:47:38,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:47:38,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:47:38,898 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:47:38,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:36" (3/4) ... [2020-12-09 15:47:38,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:47:38,905 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 15:47:38,905 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 15:47:38,905 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 15:47:38,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 15:47:38,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 15:47:38,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:47:38,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:47:38,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_150da64a-47c1-4014-bda1-45c1938f0c68/bin/utaipan/witness.graphml [2020-12-09 15:47:38,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:47:38,935 INFO L168 Benchmark]: Toolchain (without parser) took 3573.45 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 66.0 MB in the beginning and 74.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:47:38,935 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory was 83.8 MB in the beginning and 83.8 MB in the end (delta: 78.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:47:38,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.9 MB in the beginning and 59.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:47:38,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.43 ms. Allocated memory is still 104.9 MB. Free memory was 59.4 MB in the beginning and 57.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:47:38,936 INFO L168 Benchmark]: Boogie Preprocessor took 17.25 ms. Allocated memory is still 104.9 MB. Free memory was 57.8 MB in the beginning and 56.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:47:38,937 INFO L168 Benchmark]: RCFGBuilder took 273.82 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 56.5 MB in the beginning and 94.3 MB in the end (delta: -37.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:47:38,937 INFO L168 Benchmark]: TraceAbstraction took 2848.19 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 94.3 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2020-12-09 15:47:38,938 INFO L168 Benchmark]: Witness Printer took 36.27 ms. Allocated memory is still 151.0 MB. Free memory was 77.6 MB in the beginning and 74.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:47:38,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory was 83.8 MB in the beginning and 83.8 MB in the end (delta: 78.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.9 MB in the beginning and 59.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.43 ms. Allocated memory is still 104.9 MB. Free memory was 59.4 MB in the beginning and 57.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.25 ms. Allocated memory is still 104.9 MB. Free memory was 57.8 MB in the beginning and 56.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 273.82 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 56.5 MB in the beginning and 94.3 MB in the end (delta: -37.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2848.19 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 94.3 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. * Witness Printer took 36.27 ms. Allocated memory is still 151.0 MB. Free memory was 77.6 MB in the beginning and 74.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 856 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 84 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 2541 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 107 SDtfs, 128 SDslu, 96 SDs, 0 SdLazy, 33 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 81 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...