./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/17_szymanski.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_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/17_szymanski.i -s /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:55:00,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:55:00,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:55:00,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:55:00,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:55:00,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:55:00,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:55:00,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:55:00,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:55:00,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:55:00,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:55:00,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:55:00,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:55:00,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:55:00,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:55:00,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:55:00,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:55:00,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:55:00,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:55:00,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:55:00,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:55:00,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:55:00,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:55:00,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:55:00,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:55:00,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:55:00,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:55:00,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:55:00,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:55:00,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:55:00,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:55:00,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:55:00,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:55:00,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:55:00,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:55:00,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:55:00,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:55:00,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:55:00,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:55:00,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:55:00,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:55:00,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:55:00,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:55:00,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:55:00,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:55:00,804 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:55:00,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:55:00,804 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:55:00,804 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:55:00,804 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:55:00,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:55:00,805 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:55:00,805 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:55:00,805 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:55:00,805 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:55:00,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:55:00,806 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:55:00,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:55:00,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:55:00,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:55:00,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:55:00,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:55:00,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:55:00,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:55:00,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:55:00,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:55:00,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:55:00,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:55:00,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:55:00,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:55:00,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:55:00,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:55:00,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:55:00,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:55:00,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:55:00,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:55:00,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:55:00,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:55:00,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:55:00,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:55:00,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:55:00,810 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_af157ee3-7606-469d-8de3-ad1091485670/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2020-12-09 04:55:01,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:55:01,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:55:01,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:55:01,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:55:01,021 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:55:01,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/../../sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-12-09 04:55:01,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/data/5aa94d490/8400b06f60424d55af5673e3e5afc4e9/FLAGb68988620 [2020-12-09 04:55:01,467 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:55:01,467 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-12-09 04:55:01,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/data/5aa94d490/8400b06f60424d55af5673e3e5afc4e9/FLAGb68988620 [2020-12-09 04:55:01,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/data/5aa94d490/8400b06f60424d55af5673e3e5afc4e9 [2020-12-09 04:55:01,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:55:01,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:55:01,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:55:01,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:55:01,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:55:01,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:55:01" (1/1) ... [2020-12-09 04:55:01,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcba917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:01, skipping insertion in model container [2020-12-09 04:55:01,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:55:01" (1/1) ... [2020-12-09 04:55:01,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:55:01,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:55:02,073 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_af157ee3-7606-469d-8de3-ad1091485670/sv-benchmarks/c/pthread-ext/17_szymanski.i[30132,30145] [2020-12-09 04:55:02,077 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_af157ee3-7606-469d-8de3-ad1091485670/sv-benchmarks/c/pthread-ext/17_szymanski.i[30481,30494] [2020-12-09 04:55:02,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:55:02,086 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:55:02,113 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_af157ee3-7606-469d-8de3-ad1091485670/sv-benchmarks/c/pthread-ext/17_szymanski.i[30132,30145] [2020-12-09 04:55:02,115 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_af157ee3-7606-469d-8de3-ad1091485670/sv-benchmarks/c/pthread-ext/17_szymanski.i[30481,30494] [2020-12-09 04:55:02,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:55:02,163 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:55:02,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02 WrapperNode [2020-12-09 04:55:02,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:55:02,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:55:02,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:55:02,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:55:02,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:55:02,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:55:02,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:55:02,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:55:02,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... [2020-12-09 04:55:02,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:55:02,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:55:02,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:55:02,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:55:02,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/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 04:55:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-09 04:55:02,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-09 04:55:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 04:55:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:55:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 04:55:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:55:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:55:02,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:55:02,282 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 04:55:02,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:55:02,476 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 04:55:02,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:55:02 BoogieIcfgContainer [2020-12-09 04:55:02,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:55:02,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:55:02,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:55:02,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:55:02,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:55:01" (1/3) ... [2020-12-09 04:55:02,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585d8152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:55:02, skipping insertion in model container [2020-12-09 04:55:02,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:55:02" (2/3) ... [2020-12-09 04:55:02,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585d8152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:55:02, skipping insertion in model container [2020-12-09 04:55:02,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:55:02" (3/3) ... [2020-12-09 04:55:02,483 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-12-09 04:55:02,493 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 04:55:02,493 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:55:02,495 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 04:55:02,496 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 04:55:02,523 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 04:55:02,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 04:55:02,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:55:02,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:55:02,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:55:02,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:55:02,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:55:02,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:55:02,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:55:02,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:55:02,555 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 04:55:02,556 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 88 transitions, 181 flow [2020-12-09 04:55:02,560 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 88 transitions, 181 flow [2020-12-09 04:55:02,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2020-12-09 04:55:02,593 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2020-12-09 04:55:02,593 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 04:55:02,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2020-12-09 04:55:02,600 INFO L116 LiptonReduction]: Number of co-enabled transitions 2542 [2020-12-09 04:55:03,601 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-09 04:55:03,765 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-09 04:55:03,820 INFO L131 LiptonReduction]: Checked pairs total: 4971 [2020-12-09 04:55:03,820 INFO L133 LiptonReduction]: Total number of compositions: 49 [2020-12-09 04:55:03,824 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-12-09 04:55:03,839 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-12-09 04:55:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-12-09 04:55:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 04:55:03,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:03,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:03,847 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2012510747, now seen corresponding path program 1 times [2020-12-09 04:55:03,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:03,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178130798] [2020-12-09 04:55:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:03,968 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 04:55:03,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178130798] [2020-12-09 04:55:03,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:03,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:55:03,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123924934] [2020-12-09 04:55:03,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:55:03,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:03,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:55:03,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:55:03,985 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-12-09 04:55:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,005 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-12-09 04:55:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:55:04,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-09 04:55:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,017 INFO L225 Difference]: With dead ends: 198 [2020-12-09 04:55:04,017 INFO L226 Difference]: Without dead ends: 198 [2020-12-09 04:55:04,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:55:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-09 04:55:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-12-09 04:55:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-09 04:55:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-12-09 04:55:04,067 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-12-09 04:55:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,067 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-12-09 04:55:04,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:55:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-12-09 04:55:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 04:55:04,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:04,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:04,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:55:04,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1380149915, now seen corresponding path program 1 times [2020-12-09 04:55:04,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:04,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958012448] [2020-12-09 04:55:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:04,111 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 04:55:04,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958012448] [2020-12-09 04:55:04,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:04,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:55:04,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024992293] [2020-12-09 04:55:04,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:55:04,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:04,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:55:04,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,114 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-12-09 04:55:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,135 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-12-09 04:55:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:55:04,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-09 04:55:04,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,139 INFO L225 Difference]: With dead ends: 362 [2020-12-09 04:55:04,139 INFO L226 Difference]: Without dead ends: 362 [2020-12-09 04:55:04,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-09 04:55:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-12-09 04:55:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-09 04:55:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-12-09 04:55:04,156 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-12-09 04:55:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,156 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-12-09 04:55:04,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:55:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-12-09 04:55:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 04:55:04,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:04,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:04,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:55:04,157 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1068535658, now seen corresponding path program 1 times [2020-12-09 04:55:04,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:04,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185382765] [2020-12-09 04:55:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:04,187 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 04:55:04,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185382765] [2020-12-09 04:55:04,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:04,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:55:04,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344985163] [2020-12-09 04:55:04,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:55:04,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:04,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:55:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,189 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-12-09 04:55:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,203 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-12-09 04:55:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:55:04,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-09 04:55:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,206 INFO L225 Difference]: With dead ends: 348 [2020-12-09 04:55:04,206 INFO L226 Difference]: Without dead ends: 348 [2020-12-09 04:55:04,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-12-09 04:55:04,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-12-09 04:55:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-09 04:55:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-12-09 04:55:04,222 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-12-09 04:55:04,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,222 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-12-09 04:55:04,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:55:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-12-09 04:55:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:55:04,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:04,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:04,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:55:04,225 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash 979559035, now seen corresponding path program 1 times [2020-12-09 04:55:04,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:04,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871437171] [2020-12-09 04:55:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:04,259 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 04:55:04,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871437171] [2020-12-09 04:55:04,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:04,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:55:04,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228669202] [2020-12-09 04:55:04,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:55:04,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:04,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:55:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,261 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-12-09 04:55:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,291 INFO L93 Difference]: Finished difference Result 238 states and 595 transitions. [2020-12-09 04:55:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:55:04,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 04:55:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,293 INFO L225 Difference]: With dead ends: 238 [2020-12-09 04:55:04,293 INFO L226 Difference]: Without dead ends: 238 [2020-12-09 04:55:04,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-12-09 04:55:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-12-09 04:55:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-09 04:55:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 595 transitions. [2020-12-09 04:55:04,300 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 595 transitions. Word has length 19 [2020-12-09 04:55:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,300 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 595 transitions. [2020-12-09 04:55:04,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:55:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 595 transitions. [2020-12-09 04:55:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:55:04,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:04,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:04,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:55:04,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash 908200443, now seen corresponding path program 2 times [2020-12-09 04:55:04,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:04,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816062368] [2020-12-09 04:55:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:04,324 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 04:55:04,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816062368] [2020-12-09 04:55:04,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:04,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:55:04,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015204913] [2020-12-09 04:55:04,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:55:04,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:04,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:55:04,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,326 INFO L87 Difference]: Start difference. First operand 238 states and 595 transitions. Second operand 3 states. [2020-12-09 04:55:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,351 INFO L93 Difference]: Finished difference Result 246 states and 592 transitions. [2020-12-09 04:55:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:55:04,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 04:55:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,354 INFO L225 Difference]: With dead ends: 246 [2020-12-09 04:55:04,354 INFO L226 Difference]: Without dead ends: 245 [2020-12-09 04:55:04,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-12-09 04:55:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2020-12-09 04:55:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 04:55:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 584 transitions. [2020-12-09 04:55:04,363 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 584 transitions. Word has length 19 [2020-12-09 04:55:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,363 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 584 transitions. [2020-12-09 04:55:04,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:55:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 584 transitions. [2020-12-09 04:55:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:55:04,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:04,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:04,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 04:55:04,365 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:04,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1161819517, now seen corresponding path program 3 times [2020-12-09 04:55:04,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:04,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833012414] [2020-12-09 04:55:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:04,388 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 04:55:04,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833012414] [2020-12-09 04:55:04,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:04,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:55:04,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971096904] [2020-12-09 04:55:04,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:55:04,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:04,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:55:04,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,389 INFO L87 Difference]: Start difference. First operand 243 states and 584 transitions. Second operand 3 states. [2020-12-09 04:55:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,412 INFO L93 Difference]: Finished difference Result 241 states and 568 transitions. [2020-12-09 04:55:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:55:04,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 04:55:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,413 INFO L225 Difference]: With dead ends: 241 [2020-12-09 04:55:04,413 INFO L226 Difference]: Without dead ends: 241 [2020-12-09 04:55:04,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-09 04:55:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-12-09 04:55:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-09 04:55:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 568 transitions. [2020-12-09 04:55:04,419 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 568 transitions. Word has length 19 [2020-12-09 04:55:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,419 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 568 transitions. [2020-12-09 04:55:04,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:55:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 568 transitions. [2020-12-09 04:55:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:55:04,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:55:04,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:55:04,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 04:55:04,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:55:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:55:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash 853429251, now seen corresponding path program 4 times [2020-12-09 04:55:04,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:55:04,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017381678] [2020-12-09 04:55:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:55:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:55:04,447 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 04:55:04,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017381678] [2020-12-09 04:55:04,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:55:04,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:55:04,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378779493] [2020-12-09 04:55:04,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:55:04,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:55:04,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:55:04,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:55:04,448 INFO L87 Difference]: Start difference. First operand 241 states and 568 transitions. Second operand 3 states. [2020-12-09 04:55:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:55:04,471 INFO L93 Difference]: Finished difference Result 193 states and 449 transitions. [2020-12-09 04:55:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:55:04,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 04:55:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:55:04,471 INFO L225 Difference]: With dead ends: 193 [2020-12-09 04:55:04,471 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:55:04,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:55:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:55:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:55:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:55:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:55:04,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-09 04:55:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:55:04,472 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:55:04,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:55:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:55:04,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:55:04,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 04:55:04,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:55:04 BasicIcfg [2020-12-09 04:55:04,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:55:04,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:55:04,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:55:04,475 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:55:04,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:55:02" (3/4) ... [2020-12-09 04:55:04,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:55:04,482 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-09 04:55:04,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 04:55:04,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 04:55:04,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:55:04,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:55:04,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af157ee3-7606-469d-8de3-ad1091485670/bin/utaipan/witness.graphml [2020-12-09 04:55:04,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:55:04,516 INFO L168 Benchmark]: Toolchain (without parser) took 2672.42 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 54.7 MB in the beginning and 87.4 MB in the end (delta: -32.8 MB). Peak memory consumption was 273.7 kB. Max. memory is 16.1 GB. [2020-12-09 04:55:04,517 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 72.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:55:04,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.50 ms. Allocated memory is still 96.5 MB. Free memory was 54.5 MB in the beginning and 51.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 04:55:04,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.24 ms. Allocated memory is still 96.5 MB. Free memory was 51.6 MB in the beginning and 49.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:55:04,518 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 96.5 MB. Free memory was 49.8 MB in the beginning and 48.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:55:04,518 INFO L168 Benchmark]: RCFGBuilder took 263.50 ms. Allocated memory is still 96.5 MB. Free memory was 48.4 MB in the beginning and 55.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:55:04,519 INFO L168 Benchmark]: TraceAbstraction took 1996.66 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 54.8 MB in the beginning and 89.5 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:55:04,519 INFO L168 Benchmark]: Witness Printer took 40.48 ms. Allocated memory is still 125.8 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:55:04,521 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 96.5 MB. Free memory was 72.2 MB in the beginning and 72.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.50 ms. Allocated memory is still 96.5 MB. Free memory was 54.5 MB in the beginning and 51.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.24 ms. Allocated memory is still 96.5 MB. Free memory was 51.6 MB in the beginning and 49.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 96.5 MB. Free memory was 49.8 MB in the beginning and 48.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 263.50 ms. Allocated memory is still 96.5 MB. Free memory was 48.4 MB in the beginning and 55.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1996.66 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 54.8 MB in the beginning and 89.5 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 40.48 ms. Allocated memory is still 125.8 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 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 1204 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 36 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 192 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 68 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 51 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 49 TotalNumberOfCompositions, 4971 MoverChecksTotal - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: 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 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 373 SDtfs, 153 SDslu, 139 SDs, 0 SdLazy, 97 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=5, 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, 7 MinimizatonAttempts, 273 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2104 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...