./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.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_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/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 081edffa49857299d91f7754d14f9c862a699261 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:55:16,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:55:16,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:55:16,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:55:16,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:55:16,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:55:16,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:55:16,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:55:16,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:55:16,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:55:16,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:55:16,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:55:16,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:55:16,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:55:16,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:55:16,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:55:16,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:55:16,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:55:16,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:55:16,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:55:16,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:55:16,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:55:16,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:55:16,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:55:16,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:55:16,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:55:16,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:55:16,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:55:16,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:55:16,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:55:16,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:55:16,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:55:16,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:55:16,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:55:16,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:55:16,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:55:16,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:55:16,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:55:16,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:55:16,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:55:16,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:55:16,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:55:16,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:55:16,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:55:16,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:55:16,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:55:16,615 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:55:16,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:55:16,615 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:55:16,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:55:16,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:55:16,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:55:16,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:55:16,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:55:16,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:55:16,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:55:16,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:55:16,617 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:55:16,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:55:16,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:55:16,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:55:16,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:55:16,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:55:16,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:55:16,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:55:16,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:55:16,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:55:16,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:55:16,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:55:16,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:55:16,620 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_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/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 -> 081edffa49857299d91f7754d14f9c862a699261 [2019-11-20 05:55:16,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:55:16,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:55:16,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:55:16,784 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:55:16,785 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:55:16,785 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2019-11-20 05:55:16,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/data/1b41eb450/a12e23ba6a724ebfacdb9e75129effb7/FLAGdc169e8ad [2019-11-20 05:55:17,292 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:55:17,293 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2019-11-20 05:55:17,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/data/1b41eb450/a12e23ba6a724ebfacdb9e75129effb7/FLAGdc169e8ad [2019-11-20 05:55:17,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/data/1b41eb450/a12e23ba6a724ebfacdb9e75129effb7 [2019-11-20 05:55:17,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:55:17,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:55:17,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:55:17,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:55:17,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:55:17,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:55:17" (1/1) ... [2019-11-20 05:55:17,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784cde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:17, skipping insertion in model container [2019-11-20 05:55:17,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:55:17" (1/1) ... [2019-11-20 05:55:17,656 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:55:17,700 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:55:18,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:55:18,080 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:55:18,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:55:18,209 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:55:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18 WrapperNode [2019-11-20 05:55:18,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:55:18,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:55:18,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:55:18,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:55:18,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:55:18,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:55:18,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:55:18,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:55:18,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... [2019-11-20 05:55:18,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:55:18,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:55:18,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:55:18,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:55:18,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/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 05:55:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-20 05:55:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-20 05:55:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-20 05:55:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-20 05:55:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:55:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:55:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:55:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:55:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:55:18,375 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 05:55:18,484 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-20 05:55:18,484 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-20 05:55:18,538 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-20 05:55:18,541 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-20 05:55:18,654 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:55:18,654 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 05:55:18,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:55:18 BoogieIcfgContainer [2019-11-20 05:55:18,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:55:18,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:55:18,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:55:18,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:55:18,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:55:17" (1/3) ... [2019-11-20 05:55:18,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629ed491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:55:18, skipping insertion in model container [2019-11-20 05:55:18,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:18" (2/3) ... [2019-11-20 05:55:18,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629ed491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:55:18, skipping insertion in model container [2019-11-20 05:55:18,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:55:18" (3/3) ... [2019-11-20 05:55:18,661 INFO L109 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2019-11-20 05:55:18,702 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,702 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,702 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,702 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,703 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,703 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,703 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,703 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,704 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,704 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,704 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,704 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,705 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,705 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,705 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,705 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,706 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,706 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,706 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,707 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,707 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,707 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,707 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,707 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,708 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,708 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,708 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,709 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,715 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,716 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,716 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,717 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,717 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,717 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,717 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,717 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:55:18,731 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 05:55:18,731 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:55:18,738 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 05:55:18,748 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 05:55:18,764 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:55:18,764 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:55:18,764 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:55:18,765 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:55:18,765 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:55:18,765 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:55:18,765 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:55:18,765 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:55:18,774 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 91 transitions [2019-11-20 05:57:26,687 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 243013 states. [2019-11-20 05:57:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 243013 states. [2019-11-20 05:57:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 05:57:26,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:26,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:57:26,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:26,701 INFO L82 PathProgramCache]: Analyzing trace with hash 688916472, now seen corresponding path program 1 times [2019-11-20 05:57:26,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:26,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760393365] [2019-11-20 05:57:26,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:26,935 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 05:57:26,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760393365] [2019-11-20 05:57:26,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:57:26,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:57:26,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249819446] [2019-11-20 05:57:26,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:57:26,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:26,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:57:26,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:57:26,952 INFO L87 Difference]: Start difference. First operand 243013 states. Second operand 4 states. [2019-11-20 05:57:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:27,567 INFO L93 Difference]: Finished difference Result 30133 states and 133095 transitions. [2019-11-20 05:57:27,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:57:27,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-20 05:57:27,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:27,867 INFO L225 Difference]: With dead ends: 30133 [2019-11-20 05:57:27,867 INFO L226 Difference]: Without dead ends: 30133 [2019-11-20 05:57:27,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:57:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30133 states. [2019-11-20 05:57:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30133 to 30133. [2019-11-20 05:57:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30133 states. [2019-11-20 05:57:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30133 states to 30133 states and 133095 transitions. [2019-11-20 05:57:29,639 INFO L78 Accepts]: Start accepts. Automaton has 30133 states and 133095 transitions. Word has length 17 [2019-11-20 05:57:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:29,640 INFO L462 AbstractCegarLoop]: Abstraction has 30133 states and 133095 transitions. [2019-11-20 05:57:29,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:57:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30133 states and 133095 transitions. [2019-11-20 05:57:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 05:57:29,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:29,652 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] [2019-11-20 05:57:29,653 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:29,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2129612503, now seen corresponding path program 1 times [2019-11-20 05:57:29,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:29,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966008085] [2019-11-20 05:57:29,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:29,710 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 05:57:29,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966008085] [2019-11-20 05:57:29,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:57:29,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:57:29,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525267854] [2019-11-20 05:57:29,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:57:29,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:29,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:57:29,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:57:29,713 INFO L87 Difference]: Start difference. First operand 30133 states and 133095 transitions. Second operand 3 states. [2019-11-20 05:57:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:29,928 INFO L93 Difference]: Finished difference Result 6565 states and 20931 transitions. [2019-11-20 05:57:29,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:57:29,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-20 05:57:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:29,958 INFO L225 Difference]: With dead ends: 6565 [2019-11-20 05:57:29,958 INFO L226 Difference]: Without dead ends: 6565 [2019-11-20 05:57:29,959 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 05:57:29,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2019-11-20 05:57:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 5269. [2019-11-20 05:57:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5269 states. [2019-11-20 05:57:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 16935 transitions. [2019-11-20 05:57:30,158 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 16935 transitions. Word has length 25 [2019-11-20 05:57:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:30,159 INFO L462 AbstractCegarLoop]: Abstraction has 5269 states and 16935 transitions. [2019-11-20 05:57:30,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:57:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 16935 transitions. [2019-11-20 05:57:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 05:57:30,166 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:30,166 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] [2019-11-20 05:57:30,167 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:30,167 INFO L82 PathProgramCache]: Analyzing trace with hash 778951960, now seen corresponding path program 1 times [2019-11-20 05:57:30,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:30,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953437550] [2019-11-20 05:57:30,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:30,319 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 05:57:30,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953437550] [2019-11-20 05:57:30,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:57:30,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 05:57:30,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83177051] [2019-11-20 05:57:30,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:57:30,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:30,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:57:30,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:57:30,322 INFO L87 Difference]: Start difference. First operand 5269 states and 16935 transitions. Second operand 6 states. [2019-11-20 05:57:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:30,708 INFO L93 Difference]: Finished difference Result 10069 states and 32067 transitions. [2019-11-20 05:57:30,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:57:30,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-20 05:57:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:30,749 INFO L225 Difference]: With dead ends: 10069 [2019-11-20 05:57:30,749 INFO L226 Difference]: Without dead ends: 10069 [2019-11-20 05:57:30,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:57:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2019-11-20 05:57:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 8773. [2019-11-20 05:57:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8773 states. [2019-11-20 05:57:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 28071 transitions. [2019-11-20 05:57:31,140 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 28071 transitions. Word has length 27 [2019-11-20 05:57:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:31,141 INFO L462 AbstractCegarLoop]: Abstraction has 8773 states and 28071 transitions. [2019-11-20 05:57:31,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:57:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 28071 transitions. [2019-11-20 05:57:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 05:57:31,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:31,162 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 05:57:31,162 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:31,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:31,162 INFO L82 PathProgramCache]: Analyzing trace with hash -365306638, now seen corresponding path program 2 times [2019-11-20 05:57:31,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:31,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722761975] [2019-11-20 05:57:31,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:57:31,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722761975] [2019-11-20 05:57:31,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732792592] [2019-11-20 05:57:31,354 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:36,152 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 05:57:36,153 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:57:36,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 05:57:36,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:57:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:57:36,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:57:36,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-11-20 05:57:36,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827992734] [2019-11-20 05:57:36,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 05:57:36,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:36,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 05:57:36,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-11-20 05:57:36,314 INFO L87 Difference]: Start difference. First operand 8773 states and 28071 transitions. Second operand 15 states. [2019-11-20 05:57:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:36,771 INFO L93 Difference]: Finished difference Result 17533 states and 55587 transitions. [2019-11-20 05:57:36,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:57:36,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-11-20 05:57:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:36,829 INFO L225 Difference]: With dead ends: 17533 [2019-11-20 05:57:36,829 INFO L226 Difference]: Without dead ends: 17533 [2019-11-20 05:57:36,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2019-11-20 05:57:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17533 states. [2019-11-20 05:57:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17533 to 12277. [2019-11-20 05:57:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12277 states. [2019-11-20 05:57:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12277 states to 12277 states and 39207 transitions. [2019-11-20 05:57:37,293 INFO L78 Accepts]: Start accepts. Automaton has 12277 states and 39207 transitions. Word has length 32 [2019-11-20 05:57:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:37,294 INFO L462 AbstractCegarLoop]: Abstraction has 12277 states and 39207 transitions. [2019-11-20 05:57:37,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 05:57:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12277 states and 39207 transitions. [2019-11-20 05:57:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 05:57:37,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:37,318 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 05:57:37,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:37,530 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1830139224, now seen corresponding path program 3 times [2019-11-20 05:57:37,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:37,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374833364] [2019-11-20 05:57:37,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:57:37,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374833364] [2019-11-20 05:57:37,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125520918] [2019-11-20 05:57:37,726 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:37,800 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 05:57:37,800 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:57:37,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 05:57:37,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:57:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:57:38,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:57:38,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-11-20 05:57:38,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880746486] [2019-11-20 05:57:38,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 05:57:38,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:38,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 05:57:38,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-20 05:57:38,024 INFO L87 Difference]: Start difference. First operand 12277 states and 39207 transitions. Second operand 19 states. [2019-11-20 05:57:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:38,640 INFO L93 Difference]: Finished difference Result 19741 states and 62727 transitions. [2019-11-20 05:57:38,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 05:57:38,641 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 37 [2019-11-20 05:57:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:38,763 INFO L225 Difference]: With dead ends: 19741 [2019-11-20 05:57:38,763 INFO L226 Difference]: Without dead ends: 19741 [2019-11-20 05:57:38,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2019-11-20 05:57:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19741 states. [2019-11-20 05:57:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19741 to 19285. [2019-11-20 05:57:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19285 states. [2019-11-20 05:57:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19285 states to 19285 states and 61707 transitions. [2019-11-20 05:57:39,196 INFO L78 Accepts]: Start accepts. Automaton has 19285 states and 61707 transitions. Word has length 37 [2019-11-20 05:57:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:39,196 INFO L462 AbstractCegarLoop]: Abstraction has 19285 states and 61707 transitions. [2019-11-20 05:57:39,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 05:57:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 19285 states and 61707 transitions. [2019-11-20 05:57:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-20 05:57:39,233 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:39,233 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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 05:57:39,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:39,440 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1074844494, now seen corresponding path program 4 times [2019-11-20 05:57:39,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:39,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832884514] [2019-11-20 05:57:39,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 05:57:39,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832884514] [2019-11-20 05:57:39,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112915968] [2019-11-20 05:57:39,626 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:39,691 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 05:57:39,691 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:57:39,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 05:57:39,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:57:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 05:57:39,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:57:39,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-11-20 05:57:39,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437854686] [2019-11-20 05:57:39,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 05:57:39,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:39,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 05:57:39,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-20 05:57:39,923 INFO L87 Difference]: Start difference. First operand 19285 states and 61707 transitions. Second operand 19 states. [2019-11-20 05:57:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:40,493 INFO L93 Difference]: Finished difference Result 19285 states and 61479 transitions. [2019-11-20 05:57:40,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 05:57:40,494 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2019-11-20 05:57:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:40,586 INFO L225 Difference]: With dead ends: 19285 [2019-11-20 05:57:40,586 INFO L226 Difference]: Without dead ends: 19285 [2019-11-20 05:57:40,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2019-11-20 05:57:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19285 states. [2019-11-20 05:57:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19285 to 19285. [2019-11-20 05:57:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19285 states. [2019-11-20 05:57:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19285 states to 19285 states and 61479 transitions. [2019-11-20 05:57:41,063 INFO L78 Accepts]: Start accepts. Automaton has 19285 states and 61479 transitions. Word has length 42 [2019-11-20 05:57:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:41,064 INFO L462 AbstractCegarLoop]: Abstraction has 19285 states and 61479 transitions. [2019-11-20 05:57:41,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 05:57:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 19285 states and 61479 transitions. [2019-11-20 05:57:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-20 05:57:41,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:57:41,114 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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 05:57:41,319 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:41,320 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:57:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:57:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash -151241320, now seen corresponding path program 5 times [2019-11-20 05:57:41,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:57:41,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81141463] [2019-11-20 05:57:41,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:57:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:57:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 05:57:41,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81141463] [2019-11-20 05:57:41,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729255645] [2019-11-20 05:57:41,470 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:41,550 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-20 05:57:41,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:57:41,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 05:57:41,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:57:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 05:57:41,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:57:41,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-11-20 05:57:41,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872989481] [2019-11-20 05:57:41,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 05:57:41,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:57:41,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 05:57:41,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-20 05:57:41,720 INFO L87 Difference]: Start difference. First operand 19285 states and 61479 transitions. Second operand 19 states. [2019-11-20 05:57:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:57:42,270 INFO L93 Difference]: Finished difference Result 18829 states and 60231 transitions. [2019-11-20 05:57:42,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 05:57:42,284 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2019-11-20 05:57:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:57:42,284 INFO L225 Difference]: With dead ends: 18829 [2019-11-20 05:57:42,284 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:57:42,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2019-11-20 05:57:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:57:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:57:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:57:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:57:42,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-11-20 05:57:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:57:42,287 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:57:42,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 05:57:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:57:42,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:57:42,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:57:42,494 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 05:57:42,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:57:42 BasicIcfg [2019-11-20 05:57:42,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:57:42,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:57:42,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:57:42,497 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:57:42,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:55:18" (3/4) ... [2019-11-20 05:57:42,501 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:57:42,512 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-11-20 05:57:42,513 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-20 05:57:42,517 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 05:57:42,517 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 05:57:42,517 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 05:57:42,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2fbbcc38-2bd8-4e8e-85a5-05c90115adc9/bin/uautomizer/witness.graphml [2019-11-20 05:57:42,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:57:42,554 INFO L168 Benchmark]: Toolchain (without parser) took 144910.04 ms. Allocated memory was 1.0 GB in the beginning and 6.1 GB in the end (delta: 5.1 GB). Free memory was 946.1 MB in the beginning and 3.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.9 GB. Max. memory is 11.5 GB. [2019-11-20 05:57:42,555 INFO L168 Benchmark]: CDTParser took 0.25 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 05:57:42,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:57:42,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.82 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 05:57:42,556 INFO L168 Benchmark]: Boogie Preprocessor took 30.49 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 05:57:42,557 INFO L168 Benchmark]: RCFGBuilder took 353.33 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 05:57:42,558 INFO L168 Benchmark]: TraceAbstraction took 143840.80 ms. Allocated memory was 1.2 GB in the beginning and 6.1 GB in the end (delta: 4.9 GB). Free memory was 1.1 GB in the beginning and 3.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.8 GB. Max. memory is 11.5 GB. [2019-11-20 05:57:42,558 INFO L168 Benchmark]: Witness Printer took 55.18 ms. Allocated memory is still 6.1 GB. Free memory was 3.2 GB in the beginning and 3.2 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:57:42,561 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 566.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.82 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 30.49 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 353.33 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 143840.80 ms. Allocated memory was 1.2 GB in the beginning and 6.1 GB in the end (delta: 4.9 GB). Free memory was 1.1 GB in the beginning and 3.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.8 GB. Max. memory is 11.5 GB. * Witness Printer took 55.18 ms. Allocated memory is still 6.1 GB. Free memory was 3.2 GB in the beginning and 3.2 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 95 locations, 4 error locations. Result: SAFE, OverallTime: 143.7s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 827 SDtfs, 2628 SDslu, 4730 SDs, 0 SdLazy, 1895 SolverSat, 308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243013occurred 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: 3.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 8304 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 69356 SizeOfPredicates, 44 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 30/200 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 correct! Received shutdown request...