./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40bde5130a659983f932f2ece2c1eac1247e4ea0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:52:49,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:52:49,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:52:49,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:52:49,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:52:49,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:52:49,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:52:49,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:52:49,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:52:49,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:52:49,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:52:49,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:52:49,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:52:49,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:52:49,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:52:49,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:52:49,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:52:49,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:52:49,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:52:49,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:52:49,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:52:49,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:52:49,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:52:49,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:52:49,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:52:49,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:52:49,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:52:49,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:52:49,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:52:49,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:52:49,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:52:49,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:52:49,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:52:49,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:52:49,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:52:49,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:52:49,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:52:49,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:52:49,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:52:49,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:52:49,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:52:49,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:52:49,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:52:49,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:52:49,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:52:49,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:52:49,707 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:52:49,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:52:49,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:52:49,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:52:49,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:52:49,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:52:49,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:52:49,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:52:49,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:52:49,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:52:49,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:52:49,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:52:49,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:52:49,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:52:49,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:52:49,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:52:49,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:52:49,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:52:49,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:52:49,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:52:49,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:52:49,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:52:49,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:52:49,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:52:49,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:52:49,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40bde5130a659983f932f2ece2c1eac1247e4ea0 [2020-12-01 15:52:49,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:52:50,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:52:50,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:52:50,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:52:50,013 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:52:50,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i [2020-12-01 15:52:50,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/data/15776a3bb/2902098078b441e5b44a8db57b1e2701/FLAG611ab14bd [2020-12-01 15:52:50,813 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:52:50,824 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i [2020-12-01 15:52:50,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/data/15776a3bb/2902098078b441e5b44a8db57b1e2701/FLAG611ab14bd [2020-12-01 15:52:51,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/data/15776a3bb/2902098078b441e5b44a8db57b1e2701 [2020-12-01 15:52:51,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:52:51,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:52:51,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:52:51,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:52:51,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:52:51,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9598ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51, skipping insertion in model container [2020-12-01 15:52:51,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:52:51,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:52:51,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:52:51,743 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:52:51,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:52:51,889 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:52:51,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51 WrapperNode [2020-12-01 15:52:51,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:52:51,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:52:51,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:52:51,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:52:51,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:52:51,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:52:51,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:52:51,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:52:51,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... [2020-12-01 15:52:51,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:52:51,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:52:51,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:52:51,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:52:51,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/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 [2020-12-01 15:52:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:52:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:52:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:52:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:52:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:52:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:52:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:52:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:52:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:52:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:52:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:52:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:52:52,125 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:52:52,625 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:52:52,625 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:52:52,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:52:52 BoogieIcfgContainer [2020-12-01 15:52:52,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:52:52,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:52:52,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:52:52,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:52:52,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:52:51" (1/3) ... [2020-12-01 15:52:52,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f9f1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:52:52, skipping insertion in model container [2020-12-01 15:52:52,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:52:51" (2/3) ... [2020-12-01 15:52:52,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f9f1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:52:52, skipping insertion in model container [2020-12-01 15:52:52,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:52:52" (3/3) ... [2020-12-01 15:52:52,640 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_tso.opt.i [2020-12-01 15:52:52,658 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:52:52,659 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:52:52,663 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:52:52,664 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:52:52,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,698 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,702 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,702 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,707 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,708 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,715 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,715 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,715 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:52:52,718 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:52:52,732 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-01 15:52:52,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:52:52,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:52:52,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:52:52,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:52:52,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:52:52,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:52:52,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:52:52,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:52:52,775 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:52:52,777 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-12-01 15:52:52,781 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-12-01 15:52:52,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-12-01 15:52:52,835 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-12-01 15:52:52,836 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:52:52,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-12-01 15:52:52,842 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-12-01 15:52:56,147 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-01 15:52:56,367 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-01 15:52:56,903 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 15:52:57,032 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-01 15:52:57,310 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 15:52:57,427 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-01 15:52:57,479 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-12-01 15:52:57,480 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-01 15:52:57,486 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-01 15:52:57,501 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-01 15:52:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-01 15:52:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:52:57,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:57,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:52:57,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-12-01 15:52:57,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:57,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151997683] [2020-12-01 15:52:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:52:57,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151997683] [2020-12-01 15:52:57,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:57,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:52:57,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111112990] [2020-12-01 15:52:57,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:52:57,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:57,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:52:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:52:57,742 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-01 15:52:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:57,773 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-01 15:52:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:52:57,776 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-01 15:52:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:57,789 INFO L225 Difference]: With dead ends: 90 [2020-12-01 15:52:57,789 INFO L226 Difference]: Without dead ends: 74 [2020-12-01 15:52:57,791 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 [2020-12-01 15:52:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-01 15:52:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-01 15:52:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 15:52:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-01 15:52:57,857 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-01 15:52:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:57,862 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-01 15:52:57,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:52:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-01 15:52:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:52:57,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:57,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:57,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:52:57,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:57,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-12-01 15:52:57,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:57,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578383439] [2020-12-01 15:52:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:52:58,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578383439] [2020-12-01 15:52:58,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:58,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:52:58,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602007318] [2020-12-01 15:52:58,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:52:58,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:58,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:52:58,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:52:58,064 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-01 15:52:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:58,126 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-12-01 15:52:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:52:58,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 15:52:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:58,131 INFO L225 Difference]: With dead ends: 82 [2020-12-01 15:52:58,132 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 15:52:58,133 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 [2020-12-01 15:52:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 15:52:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-01 15:52:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 15:52:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-12-01 15:52:58,157 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-12-01 15:52:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:58,157 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-12-01 15:52:58,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:52:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-12-01 15:52:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:52:58,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:58,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:58,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:52:58,160 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:58,161 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-12-01 15:52:58,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:58,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385559754] [2020-12-01 15:52:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:52:58,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385559754] [2020-12-01 15:52:58,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:58,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:52:58,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142586074] [2020-12-01 15:52:58,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:52:58,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:52:58,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:58,319 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-12-01 15:52:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:58,393 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-12-01 15:52:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:52:58,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-01 15:52:58,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:58,395 INFO L225 Difference]: With dead ends: 78 [2020-12-01 15:52:58,395 INFO L226 Difference]: Without dead ends: 42 [2020-12-01 15:52:58,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:52:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-01 15:52:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-01 15:52:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-01 15:52:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-12-01 15:52:58,414 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-12-01 15:52:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:58,415 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-12-01 15:52:58,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:52:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-12-01 15:52:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:52:58,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:52:58,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:52:58,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:52:58,419 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:52:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:52:58,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-12-01 15:52:58,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:52:58,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929031505] [2020-12-01 15:52:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:52:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:52:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:52:58,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929031505] [2020-12-01 15:52:58,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:52:58,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:52:58,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697101023] [2020-12-01 15:52:58,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:52:58,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:52:58,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:52:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:52:58,522 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 5 states. [2020-12-01 15:52:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:52:58,583 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-12-01 15:52:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:52:58,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-01 15:52:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:52:58,584 INFO L225 Difference]: With dead ends: 36 [2020-12-01 15:52:58,584 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:52:58,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:52:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:52:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:52:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:52:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:52:58,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-01 15:52:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:52:58,587 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:52:58,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:52:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:52:58,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:52:58,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:52:58,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:52:58 BasicIcfg [2020-12-01 15:52:58,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:52:58,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:52:58,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:52:58,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:52:58,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:52:52" (3/4) ... [2020-12-01 15:52:58,598 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:52:58,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:52:58,611 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:52:58,619 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-01 15:52:58,620 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:52:58,620 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:52:58,620 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:52:58,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d6d99c18-331b-4710-9847-b1382766d885/bin/uautomizer/witness.graphml [2020-12-01 15:52:58,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:52:58,686 INFO L168 Benchmark]: Toolchain (without parser) took 7604.09 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 68.3 MB in the beginning and 64.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:52:58,687 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory was 40.0 MB in the beginning and 39.9 MB in the end (delta: 40.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:52:58,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 54.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:52:58,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.65 ms. Allocated memory is still 96.5 MB. Free memory was 54.0 MB in the beginning and 52.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:52:58,689 INFO L168 Benchmark]: Boogie Preprocessor took 32.73 ms. Allocated memory is still 96.5 MB. Free memory was 52.3 MB in the beginning and 51.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:52:58,690 INFO L168 Benchmark]: RCFGBuilder took 632.72 ms. Allocated memory is still 96.5 MB. Free memory was 51.1 MB in the beginning and 63.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:52:58,691 INFO L168 Benchmark]: TraceAbstraction took 5961.75 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 62.5 MB in the beginning and 66.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:52:58,691 INFO L168 Benchmark]: Witness Printer took 91.19 ms. Allocated memory is still 148.9 MB. Free memory was 66.3 MB in the beginning and 64.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:52:58,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory was 40.0 MB in the beginning and 39.9 MB in the end (delta: 40.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 807.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 54.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.65 ms. Allocated memory is still 96.5 MB. Free memory was 54.0 MB in the beginning and 52.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.73 ms. Allocated memory is still 96.5 MB. Free memory was 52.3 MB in the beginning and 51.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 632.72 ms. Allocated memory is still 96.5 MB. Free memory was 51.1 MB in the beginning and 63.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5961.75 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 62.5 MB in the beginning and 66.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. * Witness Printer took 91.19 ms. Allocated memory is still 148.9 MB. Free memory was 66.3 MB in the beginning and 64.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 61 SDtfs, 57 SDslu, 66 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 655 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...