./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f874cf8cd89ff50bcf1cd9b98b1e6ab9880f2dbe .......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:41:34,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:41:34,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:41:34,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:41:34,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:41:34,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:41:34,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:41:34,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:41:34,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:41:34,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:41:34,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:41:34,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:41:34,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:41:34,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:41:34,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:41:34,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:41:34,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:41:34,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:41:34,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:41:34,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:41:34,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:41:34,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:41:34,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:41:34,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:41:34,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:41:34,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:41:34,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:41:34,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:41:34,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:41:34,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:41:34,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:41:34,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:41:34,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:41:34,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:41:34,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:41:34,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:41:34,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:41:34,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:41:34,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:41:34,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:41:34,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:41:34,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:41:34,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:41:34,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:41:34,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:41:34,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:41:34,558 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:41:34,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:41:34,559 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:41:34,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:41:34,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:41:34,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:41:34,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:41:34,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:41:34,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:41:34,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:41:34,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:41:34,561 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:41:34,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:41:34,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:41:34,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:41:34,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:41:34,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:41:34,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:41:34,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:41:34,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:41:34,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:41:34,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:41:34,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:41:34,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:41:34,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_18ce9fb5-ebdf-4f73-a841-40456b5b8372/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(__VERIFIER_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 -> f874cf8cd89ff50bcf1cd9b98b1e6ab9880f2dbe [2019-11-20 04:41:34,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:41:34,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:41:34,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:41:34,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:41:34,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:41:34,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2019-11-20 04:41:34,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/data/df80725a9/4001bfeb261a4832be58e5feabac4d13/FLAGa3966028c [2019-11-20 04:41:35,311 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:41:35,312 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2019-11-20 04:41:35,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/data/df80725a9/4001bfeb261a4832be58e5feabac4d13/FLAGa3966028c [2019-11-20 04:41:35,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/data/df80725a9/4001bfeb261a4832be58e5feabac4d13 [2019-11-20 04:41:35,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:41:35,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:41:35,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:41:35,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:41:35,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:41:35,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:41:35" (1/1) ... [2019-11-20 04:41:35,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63afc288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:35, skipping insertion in model container [2019-11-20 04:41:35,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:41:35" (1/1) ... [2019-11-20 04:41:35,697 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:41:35,741 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:41:36,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:41:36,169 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:41:36,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:41:36,281 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:41:36,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36 WrapperNode [2019-11-20 04:41:36,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:41:36,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:41:36,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:41:36,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:41:36,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:41:36,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:41:36,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:41:36,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:41:36,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... [2019-11-20 04:41:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:41:36,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:41:36,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:41:36,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:41:36,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/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 [2019-11-20 04:41:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-20 04:41:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-20 04:41:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-20 04:41:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-20 04:41:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 04:41:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:41:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:41:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:41:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:41:36,417 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 04:41:36,735 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:41:36,736 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 04:41:36,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:41:36 BoogieIcfgContainer [2019-11-20 04:41:36,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:41:36,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:41:36,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:41:36,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:41:36,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:41:35" (1/3) ... [2019-11-20 04:41:36,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c2f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:41:36, skipping insertion in model container [2019-11-20 04:41:36,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:41:36" (2/3) ... [2019-11-20 04:41:36,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c2f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:41:36, skipping insertion in model container [2019-11-20 04:41:36,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:41:36" (3/3) ... [2019-11-20 04:41:36,743 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2019-11-20 04:41:36,779 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,779 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,780 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,780 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,780 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,780 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,781 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,781 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,781 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,781 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,781 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,782 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,782 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,782 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,782 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,782 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,783 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,783 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,783 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,783 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,783 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,784 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,784 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,784 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,784 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,784 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,785 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,785 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,785 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,786 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,786 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,786 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,786 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,786 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,787 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,787 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,788 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,788 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,788 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,788 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,789 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,789 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,790 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,795 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,796 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,796 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,796 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,796 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,796 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,797 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,797 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,797 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,797 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,797 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,798 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:41:36,822 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 04:41:36,822 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:41:36,829 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 04:41:36,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 04:41:36,855 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:41:36,856 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:41:36,856 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:41:36,856 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:41:36,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:41:36,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:41:36,856 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:41:36,856 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:41:36,867 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 90 transitions [2019-11-20 04:43:09,738 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 230360 states. [2019-11-20 04:43:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 230360 states. [2019-11-20 04:43:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 04:43:09,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:43:09,751 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:43:09,752 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:43:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:43:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash -933191166, now seen corresponding path program 1 times [2019-11-20 04:43:09,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:43:09,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215359997] [2019-11-20 04:43:09,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:43:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:43:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:43:10,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215359997] [2019-11-20 04:43:10,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:43:10,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 04:43:10,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957923601] [2019-11-20 04:43:10,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:43:10,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:43:10,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:43:10,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:43:10,031 INFO L87 Difference]: Start difference. First operand 230360 states. Second operand 6 states. [2019-11-20 04:43:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:43:12,032 INFO L93 Difference]: Finished difference Result 261444 states and 1068991 transitions. [2019-11-20 04:43:12,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 04:43:12,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-20 04:43:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:43:12,746 INFO L225 Difference]: With dead ends: 261444 [2019-11-20 04:43:12,746 INFO L226 Difference]: Without dead ends: 151877 [2019-11-20 04:43:12,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:43:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151877 states. [2019-11-20 04:43:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151877 to 151877. [2019-11-20 04:43:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151877 states. [2019-11-20 04:43:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151877 states to 151877 states and 614620 transitions. [2019-11-20 04:43:26,359 INFO L78 Accepts]: Start accepts. Automaton has 151877 states and 614620 transitions. Word has length 26 [2019-11-20 04:43:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:43:26,359 INFO L462 AbstractCegarLoop]: Abstraction has 151877 states and 614620 transitions. [2019-11-20 04:43:26,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:43:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 151877 states and 614620 transitions. [2019-11-20 04:43:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 04:43:26,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:43:26,363 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:43:26,363 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:43:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:43:26,364 INFO L82 PathProgramCache]: Analyzing trace with hash -637356605, now seen corresponding path program 1 times [2019-11-20 04:43:26,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:43:26,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902476914] [2019-11-20 04:43:26,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:43:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:43:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:43:26,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902476914] [2019-11-20 04:43:26,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:43:26,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 04:43:26,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014417068] [2019-11-20 04:43:26,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:43:26,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:43:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:43:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:43:26,473 INFO L87 Difference]: Start difference. First operand 151877 states and 614620 transitions. Second operand 6 states. [2019-11-20 04:43:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:43:27,720 INFO L93 Difference]: Finished difference Result 165546 states and 664783 transitions. [2019-11-20 04:43:27,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 04:43:27,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-20 04:43:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:43:28,313 INFO L225 Difference]: With dead ends: 165546 [2019-11-20 04:43:28,314 INFO L226 Difference]: Without dead ends: 142496 [2019-11-20 04:43:28,315 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:43:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142496 states. [2019-11-20 04:43:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142496 to 142496. [2019-11-20 04:43:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142496 states. [2019-11-20 04:43:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142496 states to 142496 states and 573616 transitions. [2019-11-20 04:43:33,515 INFO L78 Accepts]: Start accepts. Automaton has 142496 states and 573616 transitions. Word has length 26 [2019-11-20 04:43:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:43:33,516 INFO L462 AbstractCegarLoop]: Abstraction has 142496 states and 573616 transitions. [2019-11-20 04:43:33,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:43:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 142496 states and 573616 transitions. [2019-11-20 04:43:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 04:43:33,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:43:33,518 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:43:33,518 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:43:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:43:33,519 INFO L82 PathProgramCache]: Analyzing trace with hash 545981636, now seen corresponding path program 1 times [2019-11-20 04:43:33,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:43:33,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827944879] [2019-11-20 04:43:33,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:43:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:43:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:43:33,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827944879] [2019-11-20 04:43:33,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:43:33,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 04:43:33,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272772077] [2019-11-20 04:43:33,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:43:33,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:43:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:43:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:43:33,626 INFO L87 Difference]: Start difference. First operand 142496 states and 573616 transitions. Second operand 6 states. [2019-11-20 04:43:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:43:34,583 INFO L93 Difference]: Finished difference Result 156165 states and 623779 transitions. [2019-11-20 04:43:34,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 04:43:34,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-20 04:43:34,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:43:34,929 INFO L225 Difference]: With dead ends: 156165 [2019-11-20 04:43:34,929 INFO L226 Difference]: Without dead ends: 133115 [2019-11-20 04:43:34,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:43:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133115 states. [2019-11-20 04:43:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133115 to 133115. [2019-11-20 04:43:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133115 states. [2019-11-20 04:43:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133115 states to 133115 states and 532612 transitions. [2019-11-20 04:43:46,855 INFO L78 Accepts]: Start accepts. Automaton has 133115 states and 532612 transitions. Word has length 26 [2019-11-20 04:43:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:43:46,856 INFO L462 AbstractCegarLoop]: Abstraction has 133115 states and 532612 transitions. [2019-11-20 04:43:46,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:43:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 133115 states and 532612 transitions. [2019-11-20 04:43:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 04:43:46,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:43:46,863 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:43:46,863 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:43:46,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:43:46,863 INFO L82 PathProgramCache]: Analyzing trace with hash -462342758, now seen corresponding path program 1 times [2019-11-20 04:43:46,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:43:46,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085472138] [2019-11-20 04:43:46,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:43:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:43:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:43:46,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:43:46,928 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:43:46,974 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 04:43:46,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:43:46 BasicIcfg [2019-11-20 04:43:46,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:43:46,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:43:46,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:43:46,977 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:43:46,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:41:36" (3/4) ... [2019-11-20 04:43:46,979 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 04:43:47,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_18ce9fb5-ebdf-4f73-a841-40456b5b8372/bin/uautomizer/witness.graphml [2019-11-20 04:43:47,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:43:47,060 INFO L168 Benchmark]: Toolchain (without parser) took 131378.42 ms. Allocated memory was 1.0 GB in the beginning and 7.2 GB in the end (delta: 6.2 GB). Free memory was 939.3 MB in the beginning and 4.4 GB in the end (delta: -3.4 GB). Peak memory consumption was 2.7 GB. Max. memory is 11.5 GB. [2019-11-20 04:43:47,060 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:43:47,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:43:47,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:43:47,062 INFO L168 Benchmark]: Boogie Preprocessor took 26.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:43:47,063 INFO L168 Benchmark]: RCFGBuilder took 383.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:43:47,063 INFO L168 Benchmark]: TraceAbstraction took 130238.56 ms. Allocated memory was 1.2 GB in the beginning and 7.2 GB in the end (delta: 6.1 GB). Free memory was 1.1 GB in the beginning and 4.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 11.5 GB. [2019-11-20 04:43:47,064 INFO L168 Benchmark]: Witness Printer took 81.35 ms. Allocated memory is still 7.2 GB. Free memory was 4.4 GB in the beginning and 4.4 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:43:47,069 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 600.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 383.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 130238.56 ms. Allocated memory was 1.2 GB in the beginning and 7.2 GB in the end (delta: 6.1 GB). Free memory was 1.1 GB in the beginning and 4.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 11.5 GB. * Witness Printer took 81.35 ms. Allocated memory is still 7.2 GB. Free memory was 4.4 GB in the beginning and 4.4 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 676]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 volatile int x; VAL [x=0] [L684] 0 volatile int n; VAL [n=0, x=0] [L696] 0 pthread_t t1, t2; VAL [n=0, x=0] [L697] 0 int i; VAL [n=0, x=0] [L698] 0 x = 0 VAL [n=0, x=0] [L699] 0 n = __VERIFIER_nondet_int() VAL [n=1, x=0] [L701] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [n=1, x=0] [L702] 0 i = 0 VAL [n=1, x=0] [L702] COND TRUE 0 i < n VAL [n=1, x=0] [L703] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [arg={0:0}, n=1, x=0] [L690] 2 int t; VAL [arg={0:0}, arg={0:0}, n=1, x=0] [L691] 2 t = x VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=0] [L692] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L675] COND TRUE 1 !(cond) VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L676] 1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 105 locations, 4 error locations. Result: UNSAFE, OverallTime: 130.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 407 SDtfs, 619 SDslu, 1210 SDs, 0 SdLazy, 288 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230360occurred 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: 30.7s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 4950 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...