./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01.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_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/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 ab0d24246c157035db17326bff34412824264885 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:16:46,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:16:46,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:16:46,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:16:46,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:16:46,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:16:46,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:16:46,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:16:46,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:16:46,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:16:46,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:16:46,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:16:46,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:16:46,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:16:46,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:16:46,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:16:46,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:16:46,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:16:46,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:16:46,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:16:46,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:16:46,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:16:46,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:16:46,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:16:46,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:16:46,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:16:46,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:16:46,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:16:46,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:16:46,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:16:46,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:16:46,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:16:46,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:16:46,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:16:46,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:16:46,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:16:46,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:16:46,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:16:46,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:16:46,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:16:46,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:16:46,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:16:46,693 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:16:46,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:16:46,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:16:46,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:16:46,694 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:16:46,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:16:46,695 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:16:46,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:16:46,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:16:46,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:16:46,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:16:46,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:16:46,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:16:46,696 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:16:46,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:16:46,696 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:16:46,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:16:46,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:16:46,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:16:46,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:16:46,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:16:46,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:16:46,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:16:46,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:16:46,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:16:46,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:16:46,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:16:46,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:16:46,699 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_1b2b6222-37e2-40b6-b002-78dca2eedce4/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 -> ab0d24246c157035db17326bff34412824264885 [2019-11-20 10:16:46,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:16:46,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:16:46,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:16:46,889 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:16:46,889 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:16:46,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/../../sv-benchmarks/c/pthread/lazy01.i [2019-11-20 10:16:46,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/data/04f059d50/2c35be28038142ef9fed54e1fd506714/FLAG0d2bc1392 [2019-11-20 10:16:47,424 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:16:47,425 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/sv-benchmarks/c/pthread/lazy01.i [2019-11-20 10:16:47,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/data/04f059d50/2c35be28038142ef9fed54e1fd506714/FLAG0d2bc1392 [2019-11-20 10:16:47,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/data/04f059d50/2c35be28038142ef9fed54e1fd506714 [2019-11-20 10:16:47,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:16:47,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:16:47,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:16:47,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:16:47,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:16:47,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:16:47" (1/1) ... [2019-11-20 10:16:47,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f953bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:47, skipping insertion in model container [2019-11-20 10:16:47,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:16:47" (1/1) ... [2019-11-20 10:16:47,802 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:16:47,849 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:16:48,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:16:48,222 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:16:48,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:16:48,337 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:16:48,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48 WrapperNode [2019-11-20 10:16:48,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:16:48,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:16:48,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:16:48,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:16:48,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:16:48,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:16:48,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:16:48,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:16:48,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... [2019-11-20 10:16:48,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:16:48,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:16:48,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:16:48,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:16:48,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/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 10:16:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 10:16:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2019-11-20 10:16:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2019-11-20 10:16:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2019-11-20 10:16:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2019-11-20 10:16:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2019-11-20 10:16:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2019-11-20 10:16:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 10:16:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-20 10:16:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:16:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:16:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 10:16:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:16:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:16:48,486 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 10:16:48,927 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:16:48,928 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 10:16:48,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:16:48 BoogieIcfgContainer [2019-11-20 10:16:48,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:16:48,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:16:48,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:16:48,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:16:48,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:16:47" (1/3) ... [2019-11-20 10:16:48,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83cea09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:16:48, skipping insertion in model container [2019-11-20 10:16:48,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:48" (2/3) ... [2019-11-20 10:16:48,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83cea09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:16:48, skipping insertion in model container [2019-11-20 10:16:48,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:16:48" (3/3) ... [2019-11-20 10:16:48,937 INFO L109 eAbstractionObserver]: Analyzing ICFG lazy01.i [2019-11-20 10:16:49,001 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,002 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,002 WARN L315 ript$VariableManager]: TermVariabe thread1Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,002 WARN L315 ript$VariableManager]: TermVariabe thread1Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,002 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,003 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,003 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,003 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,003 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,004 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,004 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,005 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,005 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,006 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,006 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,006 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,007 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,007 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,007 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,007 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,007 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,008 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,008 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,009 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,009 WARN L315 ript$VariableManager]: TermVariabe thread1Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,009 WARN L315 ript$VariableManager]: TermVariabe thread1Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,009 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,009 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,010 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,010 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,010 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,010 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,010 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,011 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,011 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,011 WARN L315 ript$VariableManager]: TermVariabe thread2Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,012 WARN L315 ript$VariableManager]: TermVariabe thread2Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,012 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork7_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,013 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork7_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,014 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,014 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,014 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,014 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,015 WARN L315 ript$VariableManager]: TermVariabe thread2Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,015 WARN L315 ript$VariableManager]: TermVariabe thread2Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,015 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork4_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,015 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork4_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,016 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,016 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,016 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,016 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,016 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,017 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,017 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,017 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,017 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,017 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,018 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,018 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,018 WARN L315 ript$VariableManager]: TermVariabe thread3Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,019 WARN L315 ript$VariableManager]: TermVariabe thread3Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,019 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread3of3ForFork8_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,019 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread3of3ForFork8_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,019 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,019 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,020 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,020 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,020 WARN L315 ript$VariableManager]: TermVariabe thread3Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,021 WARN L315 ript$VariableManager]: TermVariabe thread3Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,021 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of3ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,021 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of3ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,022 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,022 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,022 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,022 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,023 WARN L315 ript$VariableManager]: TermVariabe thread3Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,023 WARN L315 ript$VariableManager]: TermVariabe thread3Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,023 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread2of3ForFork5_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,023 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread2of3ForFork5_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,024 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,024 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:49,101 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 10:16:49,101 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:16:49,108 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 10:16:49,119 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 10:16:49,139 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:16:49,140 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:16:49,140 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:16:49,140 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:16:49,141 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:16:49,141 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:16:49,141 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:16:49,141 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:16:49,161 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 146 places, 151 transitions [2019-11-20 10:16:58,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74351 states. [2019-11-20 10:16:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 74351 states. [2019-11-20 10:16:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 10:16:58,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:58,433 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] [2019-11-20 10:16:58,434 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:58,439 INFO L82 PathProgramCache]: Analyzing trace with hash -640370836, now seen corresponding path program 1 times [2019-11-20 10:16:58,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:58,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669483734] [2019-11-20 10:16:58,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:58,665 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 10:16:58,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669483734] [2019-11-20 10:16:58,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:58,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:16:58,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343573683] [2019-11-20 10:16:58,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:16:58,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:16:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:58,687 INFO L87 Difference]: Start difference. First operand 74351 states. Second operand 3 states. [2019-11-20 10:16:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:59,326 INFO L93 Difference]: Finished difference Result 71111 states and 237489 transitions. [2019-11-20 10:16:59,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:16:59,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-20 10:16:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:59,624 INFO L225 Difference]: With dead ends: 71111 [2019-11-20 10:16:59,625 INFO L226 Difference]: Without dead ends: 40878 [2019-11-20 10:16:59,626 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:17:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40878 states. [2019-11-20 10:17:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40878 to 40878. [2019-11-20 10:17:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40878 states. [2019-11-20 10:17:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40878 states to 40878 states and 133208 transitions. [2019-11-20 10:17:01,658 INFO L78 Accepts]: Start accepts. Automaton has 40878 states and 133208 transitions. Word has length 29 [2019-11-20 10:17:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:17:01,659 INFO L462 AbstractCegarLoop]: Abstraction has 40878 states and 133208 transitions. [2019-11-20 10:17:01,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:17:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 40878 states and 133208 transitions. [2019-11-20 10:17:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:17:01,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:17:01,702 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] [2019-11-20 10:17:01,703 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:17:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:17:01,703 INFO L82 PathProgramCache]: Analyzing trace with hash 271634912, now seen corresponding path program 1 times [2019-11-20 10:17:01,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:17:01,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691108513] [2019-11-20 10:17:01,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:17:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:17:01,811 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 10:17:01,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691108513] [2019-11-20 10:17:01,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:17:01,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:17:01,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012548566] [2019-11-20 10:17:01,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:17:01,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:17:01,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:17:01,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:17:01,815 INFO L87 Difference]: Start difference. First operand 40878 states and 133208 transitions. Second operand 3 states. [2019-11-20 10:17:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:17:01,987 INFO L93 Difference]: Finished difference Result 21951 states and 63296 transitions. [2019-11-20 10:17:01,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:17:01,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-20 10:17:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:17:02,026 INFO L225 Difference]: With dead ends: 21951 [2019-11-20 10:17:02,026 INFO L226 Difference]: Without dead ends: 21303 [2019-11-20 10:17:02,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:17:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21303 states. [2019-11-20 10:17:02,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21303 to 21303. [2019-11-20 10:17:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21303 states. [2019-11-20 10:17:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21303 states to 21303 states and 61568 transitions. [2019-11-20 10:17:02,516 INFO L78 Accepts]: Start accepts. Automaton has 21303 states and 61568 transitions. Word has length 33 [2019-11-20 10:17:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:17:02,517 INFO L462 AbstractCegarLoop]: Abstraction has 21303 states and 61568 transitions. [2019-11-20 10:17:02,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:17:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 21303 states and 61568 transitions. [2019-11-20 10:17:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 10:17:02,534 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:17:02,535 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] [2019-11-20 10:17:02,535 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:17:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:17:02,535 INFO L82 PathProgramCache]: Analyzing trace with hash -44639724, now seen corresponding path program 1 times [2019-11-20 10:17:02,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:17:02,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431637399] [2019-11-20 10:17:02,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:17:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:17:02,628 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 10:17:02,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431637399] [2019-11-20 10:17:02,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:17:02,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:17:02,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551641296] [2019-11-20 10:17:02,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:17:02,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:17:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:17:02,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:17:02,630 INFO L87 Difference]: Start difference. First operand 21303 states and 61568 transitions. Second operand 4 states. [2019-11-20 10:17:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:17:02,750 INFO L93 Difference]: Finished difference Result 20223 states and 58472 transitions. [2019-11-20 10:17:02,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:17:02,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-11-20 10:17:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:17:02,775 INFO L225 Difference]: With dead ends: 20223 [2019-11-20 10:17:02,775 INFO L226 Difference]: Without dead ends: 19143 [2019-11-20 10:17:02,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:17:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19143 states. [2019-11-20 10:17:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19143 to 19143. [2019-11-20 10:17:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19143 states. [2019-11-20 10:17:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19143 states to 19143 states and 55376 transitions. [2019-11-20 10:17:03,213 INFO L78 Accepts]: Start accepts. Automaton has 19143 states and 55376 transitions. Word has length 34 [2019-11-20 10:17:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:17:03,213 INFO L462 AbstractCegarLoop]: Abstraction has 19143 states and 55376 transitions. [2019-11-20 10:17:03,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:17:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 19143 states and 55376 transitions. [2019-11-20 10:17:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 10:17:03,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:17:03,238 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, 1] [2019-11-20 10:17:03,238 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:17:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:17:03,238 INFO L82 PathProgramCache]: Analyzing trace with hash 394580307, now seen corresponding path program 1 times [2019-11-20 10:17:03,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:17:03,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122485581] [2019-11-20 10:17:03,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:17:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:17:03,296 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 10:17:03,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122485581] [2019-11-20 10:17:03,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:17:03,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:17:03,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645644449] [2019-11-20 10:17:03,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:17:03,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:17:03,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:17:03,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:17:03,299 INFO L87 Difference]: Start difference. First operand 19143 states and 55376 transitions. Second operand 5 states. [2019-11-20 10:17:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:17:03,437 INFO L93 Difference]: Finished difference Result 19143 states and 55124 transitions. [2019-11-20 10:17:03,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:17:03,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-20 10:17:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:17:03,471 INFO L225 Difference]: With dead ends: 19143 [2019-11-20 10:17:03,471 INFO L226 Difference]: Without dead ends: 18711 [2019-11-20 10:17:03,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:17:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18711 states. [2019-11-20 10:17:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18711 to 18603. [2019-11-20 10:17:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18603 states. [2019-11-20 10:17:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18603 states to 18603 states and 53702 transitions. [2019-11-20 10:17:04,327 INFO L78 Accepts]: Start accepts. Automaton has 18603 states and 53702 transitions. Word has length 36 [2019-11-20 10:17:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:17:04,327 INFO L462 AbstractCegarLoop]: Abstraction has 18603 states and 53702 transitions. [2019-11-20 10:17:04,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:17:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 18603 states and 53702 transitions. [2019-11-20 10:17:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 10:17:04,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:17:04,346 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, 1] [2019-11-20 10:17:04,346 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:17:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:17:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash -419300063, now seen corresponding path program 1 times [2019-11-20 10:17:04,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:17:04,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496260029] [2019-11-20 10:17:04,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:17:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:17:04,420 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 10:17:04,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496260029] [2019-11-20 10:17:04,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:17:04,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:17:04,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132406580] [2019-11-20 10:17:04,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:17:04,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:17:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:17:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:17:04,422 INFO L87 Difference]: Start difference. First operand 18603 states and 53702 transitions. Second operand 5 states. [2019-11-20 10:17:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:17:04,558 INFO L93 Difference]: Finished difference Result 18603 states and 53450 transitions. [2019-11-20 10:17:04,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:17:04,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-20 10:17:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:17:04,579 INFO L225 Difference]: With dead ends: 18603 [2019-11-20 10:17:04,580 INFO L226 Difference]: Without dead ends: 18171 [2019-11-20 10:17:04,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:17:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18171 states. [2019-11-20 10:17:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18171 to 17955. [2019-11-20 10:17:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17955 states. [2019-11-20 10:17:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 51794 transitions. [2019-11-20 10:17:04,910 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 51794 transitions. Word has length 36 [2019-11-20 10:17:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:17:04,911 INFO L462 AbstractCegarLoop]: Abstraction has 17955 states and 51794 transitions. [2019-11-20 10:17:04,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:17:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 51794 transitions. [2019-11-20 10:17:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 10:17:04,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:17:04,932 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, 1] [2019-11-20 10:17:04,932 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:17:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:17:04,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1013175439, now seen corresponding path program 1 times [2019-11-20 10:17:04,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:17:04,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337889575] [2019-11-20 10:17:04,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:17:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:17:05,010 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 10:17:05,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337889575] [2019-11-20 10:17:05,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:17:05,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:17:05,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704245024] [2019-11-20 10:17:05,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:17:05,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:17:05,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:17:05,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:17:05,013 INFO L87 Difference]: Start difference. First operand 17955 states and 51794 transitions. Second operand 5 states. [2019-11-20 10:17:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:17:05,141 INFO L93 Difference]: Finished difference Result 17631 states and 50840 transitions. [2019-11-20 10:17:05,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:17:05,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-20 10:17:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:17:05,168 INFO L225 Difference]: With dead ends: 17631 [2019-11-20 10:17:05,168 INFO L226 Difference]: Without dead ends: 17199 [2019-11-20 10:17:05,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:17:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2019-11-20 10:17:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 16983. [2019-11-20 10:17:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16983 states. [2019-11-20 10:17:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 49184 transitions. [2019-11-20 10:17:05,480 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 49184 transitions. Word has length 36 [2019-11-20 10:17:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:17:05,480 INFO L462 AbstractCegarLoop]: Abstraction has 16983 states and 49184 transitions. [2019-11-20 10:17:05,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:17:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 49184 transitions. [2019-11-20 10:17:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 10:17:05,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:17:05,500 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, 1, 1, 1, 1, 1, 1] [2019-11-20 10:17:05,501 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:17:05,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:17:05,501 INFO L82 PathProgramCache]: Analyzing trace with hash 16636045, now seen corresponding path program 1 times [2019-11-20 10:17:05,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:17:05,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329593746] [2019-11-20 10:17:05,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:17:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:17:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:17:05,579 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:17:05,579 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:17:05,632 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 10:17:05,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:17:05 BasicIcfg [2019-11-20 10:17:05,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:17:05,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:17:05,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:17:05,634 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:17:05,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:16:48" (3/4) ... [2019-11-20 10:17:05,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 10:17:05,706 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1b2b6222-37e2-40b6-b002-78dca2eedce4/bin/uautomizer/witness.graphml [2019-11-20 10:17:05,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:17:05,711 INFO L168 Benchmark]: Toolchain (without parser) took 17931.32 ms. Allocated memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: 1.3 GB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -251.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2019-11-20 10:17:05,712 INFO L168 Benchmark]: CDTParser took 0.30 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 10:17:05,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:17:05,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.93 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:17:05,720 INFO L168 Benchmark]: Boogie Preprocessor took 24.93 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 10:17:05,721 INFO L168 Benchmark]: RCFGBuilder took 522.25 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:17:05,722 INFO L168 Benchmark]: TraceAbstraction took 16703.30 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -130.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2019-11-20 10:17:05,723 INFO L168 Benchmark]: Witness Printer took 75.64 ms. Allocated memory is still 2.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:17:05,729 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 555.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.93 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.93 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 522.25 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16703.30 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -130.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. * Witness Printer took 75.64 ms. Allocated memory is still 2.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 pthread_mutex_t mutex; VAL [mutex={5:0}] [L684] 0 int data = 0; VAL [data=0, mutex={5:0}] [L712] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={5:0}] [L713] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={5:0}] [L688] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, mutex={5:0}] [L714] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={5:0}] [L715] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={5:0}] [L695] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={5:0}] [L702] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={5:0}] [L703] 3 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 156 locations, 4 error locations. Result: UNSAFE, OverallTime: 16.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 772 SDtfs, 655 SDslu, 1069 SDs, 0 SdLazy, 159 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74351occurred 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: 4.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 540 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 14732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...