./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 194d8141f2fe46add34fe842cbce6b591bb89557 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 194d8141f2fe46add34fe842cbce6b591bb89557 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: Do not try to interpolate when trace is feasible --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:36:02,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:36:02,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:36:02,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:36:02,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:36:02,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:36:02,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:36:02,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:36:02,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:36:02,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:36:02,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:36:02,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:36:02,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:36:02,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:36:02,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:36:02,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:36:02,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:36:02,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:36:02,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:36:02,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:36:02,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:36:02,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:36:02,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:36:02,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:36:02,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:36:02,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:36:02,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:36:02,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:36:02,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:36:02,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:36:02,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:36:02,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:36:02,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:36:02,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:36:02,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:36:02,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:36:02,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:36:02,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:36:02,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:36:02,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:36:02,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:36:02,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:36:02,619 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:36:02,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:36:02,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:36:02,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:36:02,631 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:36:02,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:36:02,632 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:36:02,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:36:02,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:36:02,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:36:02,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:36:02,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:36:02,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:36:02,635 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:36:02,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:36:02,635 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:36:02,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:36:02,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:36:02,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:36:02,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:36:02,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:36:02,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:36:02,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:36:02,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:36:02,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:36:02,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:36:02,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:36:02,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:36:02,639 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_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 -> 194d8141f2fe46add34fe842cbce6b591bb89557 [2019-11-15 22:36:02,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:36:02,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:36:02,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:36:02,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:36:02,712 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:36:02,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longest-2.i [2019-11-15 22:36:02,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/8eb90aadc/d37243222ace441480d368f7370c177f/FLAGd2ff1e820 [2019-11-15 22:36:03,311 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:36:03,313 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/sv-benchmarks/c/pthread/stack_longest-2.i [2019-11-15 22:36:03,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/8eb90aadc/d37243222ace441480d368f7370c177f/FLAGd2ff1e820 [2019-11-15 22:36:03,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/8eb90aadc/d37243222ace441480d368f7370c177f [2019-11-15 22:36:03,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:36:03,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:36:03,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:36:03,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:36:03,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:36:03,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:36:03" (1/1) ... [2019-11-15 22:36:03,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cec78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:03, skipping insertion in model container [2019-11-15 22:36:03,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:36:03" (1/1) ... [2019-11-15 22:36:03,564 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:36:03,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:36:04,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:36:04,235 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:36:04,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:36:04,494 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:36:04,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04 WrapperNode [2019-11-15 22:36:04,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:36:04,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:36:04,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:36:04,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:36:04,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:36:04,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:36:04,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:36:04,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:36:04,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... [2019-11-15 22:36:04,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:36:04,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:36:04,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:36:04,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:36:04,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 [2019-11-15 22:36:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 22:36:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 22:36:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 22:36:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 22:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 22:36:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 22:36:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:36:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:36:04,776 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:36:05,353 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:36:05,353 INFO L284 CfgBuilder]: Removed 22 assume(true) statements. [2019-11-15 22:36:05,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:36:05 BoogieIcfgContainer [2019-11-15 22:36:05,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:36:05,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:36:05,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:36:05,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:36:05,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:36:03" (1/3) ... [2019-11-15 22:36:05,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764d242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:36:05, skipping insertion in model container [2019-11-15 22:36:05,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:04" (2/3) ... [2019-11-15 22:36:05,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764d242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:36:05, skipping insertion in model container [2019-11-15 22:36:05,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:36:05" (3/3) ... [2019-11-15 22:36:05,363 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2019-11-15 22:36:05,398 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,399 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,399 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,399 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,399 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,400 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,400 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,400 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,400 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,401 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,401 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,401 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,401 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,402 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,402 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,402 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,402 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,402 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,403 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,403 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,403 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,403 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,404 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,404 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,404 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,404 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,404 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,405 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,405 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,405 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,405 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,405 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,406 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,406 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,406 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,406 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,407 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,407 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,407 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,407 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,407 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,408 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,408 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,408 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,408 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,409 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,409 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,409 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,409 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,410 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,410 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,410 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,410 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,411 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,411 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,411 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,411 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,412 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,412 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,412 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,412 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,413 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,414 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,414 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,414 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,414 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,415 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,415 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,415 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,415 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,416 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,416 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,416 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,416 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,417 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,417 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,417 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,418 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,418 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,418 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,418 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,418 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,419 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,419 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,419 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,419 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,419 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,420 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,420 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,420 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,420 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,421 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,421 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,421 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,421 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,422 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,422 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,422 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,422 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,423 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,423 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,423 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,423 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,424 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,424 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,424 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,424 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,425 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,425 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,425 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,425 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,426 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,426 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,427 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,427 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,427 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,427 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:05,491 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:36:05,491 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:36:05,501 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 22:36:05,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 22:36:05,566 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:36:05,572 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:36:05,572 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:36:05,572 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:36:05,573 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:36:05,573 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:36:05,573 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:36:05,573 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:36:05,587 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 122 places, 130 transitions [2019-11-15 22:36:05,844 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5568 states. [2019-11-15 22:36:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states. [2019-11-15 22:36:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 22:36:05,872 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:05,873 INFO L380 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, 1, 1] [2019-11-15 22:36:05,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:05,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1732045183, now seen corresponding path program 1 times [2019-11-15 22:36:05,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:36:05,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858947025] [2019-11-15 22:36:05,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:05,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:05,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:36:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:06,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858947025] [2019-11-15 22:36:06,227 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:06,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:36:06,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930165210] [2019-11-15 22:36:06,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:36:06,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:36:06,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:36:06,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:36:06,251 INFO L87 Difference]: Start difference. First operand 5568 states. Second operand 3 states. [2019-11-15 22:36:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:06,466 INFO L93 Difference]: Finished difference Result 8079 states and 21423 transitions. [2019-11-15 22:36:06,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:36:06,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-15 22:36:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:06,563 INFO L225 Difference]: With dead ends: 8079 [2019-11-15 22:36:06,563 INFO L226 Difference]: Without dead ends: 7818 [2019-11-15 22:36:06,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:36:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2019-11-15 22:36:06,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7530. [2019-11-15 22:36:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7530 states. [2019-11-15 22:36:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 20173 transitions. [2019-11-15 22:36:06,979 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 20173 transitions. Word has length 43 [2019-11-15 22:36:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:06,981 INFO L462 AbstractCegarLoop]: Abstraction has 7530 states and 20173 transitions. [2019-11-15 22:36:06,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:36:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 20173 transitions. [2019-11-15 22:36:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 22:36:06,988 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:06,989 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:36:06,989 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:06,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1039196014, now seen corresponding path program 1 times [2019-11-15 22:36:06,990 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:36:06,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295766304] [2019-11-15 22:36:06,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:06,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:06,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:36:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:07,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295766304] [2019-11-15 22:36:07,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:07,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:36:07,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920744666] [2019-11-15 22:36:07,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:36:07,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:36:07,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:36:07,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:36:07,111 INFO L87 Difference]: Start difference. First operand 7530 states and 20173 transitions. Second operand 4 states. [2019-11-15 22:36:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:07,270 INFO L93 Difference]: Finished difference Result 11067 states and 29548 transitions. [2019-11-15 22:36:07,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:36:07,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-15 22:36:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:07,369 INFO L225 Difference]: With dead ends: 11067 [2019-11-15 22:36:07,370 INFO L226 Difference]: Without dead ends: 11067 [2019-11-15 22:36:07,371 INFO L600 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 [2019-11-15 22:36:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11067 states. [2019-11-15 22:36:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11067 to 8097. [2019-11-15 22:36:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8097 states. [2019-11-15 22:36:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 21685 transitions. [2019-11-15 22:36:07,766 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 21685 transitions. Word has length 53 [2019-11-15 22:36:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:07,766 INFO L462 AbstractCegarLoop]: Abstraction has 8097 states and 21685 transitions. [2019-11-15 22:36:07,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:36:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 21685 transitions. [2019-11-15 22:36:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-15 22:36:07,775 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:07,775 INFO L380 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, 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] [2019-11-15 22:36:07,775 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1806941690, now seen corresponding path program 1 times [2019-11-15 22:36:07,776 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:36:07,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115695425] [2019-11-15 22:36:07,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:07,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:07,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:36:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:07,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115695425] [2019-11-15 22:36:07,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:07,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:36:07,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629635047] [2019-11-15 22:36:07,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:36:07,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:36:07,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:36:07,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:36:07,841 INFO L87 Difference]: Start difference. First operand 8097 states and 21685 transitions. Second operand 3 states. [2019-11-15 22:36:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:07,969 INFO L93 Difference]: Finished difference Result 12177 states and 32438 transitions. [2019-11-15 22:36:07,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:36:07,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-11-15 22:36:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:08,004 INFO L225 Difference]: With dead ends: 12177 [2019-11-15 22:36:08,004 INFO L226 Difference]: Without dead ends: 12177 [2019-11-15 22:36:08,005 INFO L600 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 [2019-11-15 22:36:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12177 states. [2019-11-15 22:36:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12177 to 11112. [2019-11-15 22:36:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11112 states. [2019-11-15 22:36:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 29864 transitions. [2019-11-15 22:36:08,374 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 29864 transitions. Word has length 68 [2019-11-15 22:36:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:08,377 INFO L462 AbstractCegarLoop]: Abstraction has 11112 states and 29864 transitions. [2019-11-15 22:36:08,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:36:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 29864 transitions. [2019-11-15 22:36:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-15 22:36:08,389 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:08,390 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-11-15 22:36:08,390 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:08,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2125882844, now seen corresponding path program 1 times [2019-11-15 22:36:08,391 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:36:08,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000716156] [2019-11-15 22:36:08,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:08,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:08,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:36:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:08,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000716156] [2019-11-15 22:36:08,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316763518] [2019-11-15 22:36:08,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 [2019-11-15 22:36:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:08,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:36:08,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:08,763 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:36:08,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-15 22:36:08,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199185351] [2019-11-15 22:36:08,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:36:08,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:36:08,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:36:08,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:36:08,766 INFO L87 Difference]: Start difference. First operand 11112 states and 29864 transitions. Second operand 7 states. [2019-11-15 22:36:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:09,078 INFO L93 Difference]: Finished difference Result 16698 states and 44481 transitions. [2019-11-15 22:36:09,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 22:36:09,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2019-11-15 22:36:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:09,133 INFO L225 Difference]: With dead ends: 16698 [2019-11-15 22:36:09,134 INFO L226 Difference]: Without dead ends: 16602 [2019-11-15 22:36:09,134 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:36:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16602 states. [2019-11-15 22:36:09,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16602 to 13452. [2019-11-15 22:36:09,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13452 states. [2019-11-15 22:36:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13452 states to 13452 states and 36229 transitions. [2019-11-15 22:36:09,697 INFO L78 Accepts]: Start accepts. Automaton has 13452 states and 36229 transitions. Word has length 75 [2019-11-15 22:36:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:09,699 INFO L462 AbstractCegarLoop]: Abstraction has 13452 states and 36229 transitions. [2019-11-15 22:36:09,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:36:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 13452 states and 36229 transitions. [2019-11-15 22:36:09,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-15 22:36:09,712 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:09,712 INFO L380 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, 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] [2019-11-15 22:36:09,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:36:09,918 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:09,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1588557679, now seen corresponding path program 1 times [2019-11-15 22:36:09,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:36:09,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297143307] [2019-11-15 22:36:09,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:09,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:09,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:36:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:10,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297143307] [2019-11-15 22:36:10,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:10,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:36:10,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098167382] [2019-11-15 22:36:10,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:36:10,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:36:10,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:36:10,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:36:10,022 INFO L87 Difference]: Start difference. First operand 13452 states and 36229 transitions. Second operand 3 states. [2019-11-15 22:36:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:10,070 INFO L93 Difference]: Finished difference Result 5253 states and 13360 transitions. [2019-11-15 22:36:10,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:36:10,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-11-15 22:36:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:10,085 INFO L225 Difference]: With dead ends: 5253 [2019-11-15 22:36:10,085 INFO L226 Difference]: Without dead ends: 5253 [2019-11-15 22:36:10,085 INFO L600 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 [2019-11-15 22:36:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2019-11-15 22:36:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 4590. [2019-11-15 22:36:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4590 states. [2019-11-15 22:36:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 11588 transitions. [2019-11-15 22:36:10,188 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 11588 transitions. Word has length 78 [2019-11-15 22:36:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:10,189 INFO L462 AbstractCegarLoop]: Abstraction has 4590 states and 11588 transitions. [2019-11-15 22:36:10,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:36:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 11588 transitions. [2019-11-15 22:36:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 22:36:10,199 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:10,199 INFO L380 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, 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, 1, 1, 1] [2019-11-15 22:36:10,199 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1589413268, now seen corresponding path program 1 times [2019-11-15 22:36:10,200 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:36:10,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076512805] [2019-11-15 22:36:10,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:10,201 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:36:10,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:36:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:10,385 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 22:36:10,390 INFO L168 Benchmark]: Toolchain (without parser) took 6873.82 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 331.4 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 161.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:36:10,390 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:36:10,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 962.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:36:10,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.10 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. [2019-11-15 22:36:10,392 INFO L168 Benchmark]: Boogie Preprocessor took 71.29 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. [2019-11-15 22:36:10,392 INFO L168 Benchmark]: RCFGBuilder took 682.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:36:10,393 INFO L168 Benchmark]: TraceAbstraction took 5031.74 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 181.4 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -69.5 MB). Peak memory consumption was 111.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:36:10,397 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 962.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.10 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. * Boogie Preprocessor took 71.29 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 682.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5031.74 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 181.4 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -69.5 MB). Peak memory consumption was 111.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 22:36:12,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:36:12,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:36:12,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:36:12,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:36:12,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:36:12,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:36:12,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:36:12,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:36:12,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:36:12,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:36:12,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:36:12,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:36:12,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:36:12,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:36:12,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:36:12,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:36:12,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:36:12,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:36:12,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:36:12,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:36:12,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:36:12,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:36:12,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:36:12,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:36:12,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:36:12,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:36:12,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:36:12,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:36:12,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:36:12,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:36:12,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:36:12,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:36:12,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:36:12,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:36:12,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:36:12,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:36:12,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:36:12,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:36:12,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:36:12,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:36:12,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 22:36:12,913 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:36:12,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:36:12,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:36:12,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:36:12,916 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:36:12,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:36:12,919 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:36:12,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:36:12,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:36:12,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:36:12,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:36:12,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:36:12,921 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 22:36:12,921 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 22:36:12,921 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:36:12,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:36:12,921 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:36:12,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:36:12,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:36:12,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:36:12,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:36:12,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:36:12,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:36:12,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:36:12,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:36:12,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:36:12,926 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 22:36:12,926 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 22:36:12,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:36:12,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 22:36:12,928 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 -> 194d8141f2fe46add34fe842cbce6b591bb89557 [2019-11-15 22:36:12,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:36:12,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:36:12,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:36:12,996 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:36:12,996 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:36:12,997 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longest-2.i [2019-11-15 22:36:13,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/780b07abd/e223bda528be4025bba163de8148e289/FLAG2f12129ed [2019-11-15 22:36:13,664 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:36:13,665 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/sv-benchmarks/c/pthread/stack_longest-2.i [2019-11-15 22:36:13,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/780b07abd/e223bda528be4025bba163de8148e289/FLAG2f12129ed [2019-11-15 22:36:13,866 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/data/780b07abd/e223bda528be4025bba163de8148e289 [2019-11-15 22:36:13,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:36:13,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:36:13,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:36:13,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:36:13,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:36:13,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:36:13" (1/1) ... [2019-11-15 22:36:13,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503f564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:13, skipping insertion in model container [2019-11-15 22:36:13,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:36:13" (1/1) ... [2019-11-15 22:36:13,897 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:36:13,970 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:36:14,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:36:14,633 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:36:14,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:36:14,907 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:36:14,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14 WrapperNode [2019-11-15 22:36:14,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:36:14,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:36:14,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:36:14,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:36:14,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:14,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:36:15,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:36:15,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:36:15,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:36:15,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... [2019-11-15 22:36:15,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:36:15,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:36:15,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:36:15,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:36:15,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/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 [2019-11-15 22:36:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 22:36:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 22:36:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 22:36:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 22:36:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 22:36:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:36:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:36:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 22:36:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-15 22:36:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 22:36:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:36:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:36:15,183 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:36:15,897 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:36:15,897 INFO L284 CfgBuilder]: Removed 22 assume(true) statements. [2019-11-15 22:36:15,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:36:15 BoogieIcfgContainer [2019-11-15 22:36:15,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:36:15,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:36:15,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:36:15,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:36:15,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:36:13" (1/3) ... [2019-11-15 22:36:15,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29561068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:36:15, skipping insertion in model container [2019-11-15 22:36:15,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:36:14" (2/3) ... [2019-11-15 22:36:15,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29561068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:36:15, skipping insertion in model container [2019-11-15 22:36:15,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:36:15" (3/3) ... [2019-11-15 22:36:15,909 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2019-11-15 22:36:15,957 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,957 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,958 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,958 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,958 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,958 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,958 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,959 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,959 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,959 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,960 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,960 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,961 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,961 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,961 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,961 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,962 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,962 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,962 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,963 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,963 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,963 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,964 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,964 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,964 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,964 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,965 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,965 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,965 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,966 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,966 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,966 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,966 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,967 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,967 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,969 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,969 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,969 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,970 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,970 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,970 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,971 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,971 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,971 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,972 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,972 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,972 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,973 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,973 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,973 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,973 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,974 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,974 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,974 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,975 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,975 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,976 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,976 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,977 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,977 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,977 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,978 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,978 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,978 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,979 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,979 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,979 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,980 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,980 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,980 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,981 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,981 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,981 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,982 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,982 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,982 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,982 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,983 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,983 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,983 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,984 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,984 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,984 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,984 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,985 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,985 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,985 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,986 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,986 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,986 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,987 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,987 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,987 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,987 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,988 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,988 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,988 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,989 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,989 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,990 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,990 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,990 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,990 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,991 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,991 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,991 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,991 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,992 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:15,992 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:36:16,029 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:36:16,029 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:36:16,038 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 22:36:16,051 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 22:36:16,074 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:36:16,074 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:36:16,075 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:36:16,075 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:36:16,075 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:36:16,075 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:36:16,076 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:36:16,076 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:36:16,089 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 126 transitions [2019-11-15 22:36:16,502 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5064 states. [2019-11-15 22:36:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states. [2019-11-15 22:36:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-15 22:36:16,533 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:16,534 INFO L380 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, 1] [2019-11-15 22:36:16,536 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:16,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1328304509, now seen corresponding path program 1 times [2019-11-15 22:36:16,558 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:36:16,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1132873917] [2019-11-15 22:36:16,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:16,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:36:16,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:16,944 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:36:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:16,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1132873917] [2019-11-15 22:36:16,966 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:16,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 22:36:16,967 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635639903] [2019-11-15 22:36:16,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:36:16,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:36:16,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:36:16,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:36:16,992 INFO L87 Difference]: Start difference. First operand 5064 states. Second operand 4 states. [2019-11-15 22:36:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:17,282 INFO L93 Difference]: Finished difference Result 9651 states and 25698 transitions. [2019-11-15 22:36:17,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:36:17,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2019-11-15 22:36:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:17,381 INFO L225 Difference]: With dead ends: 9651 [2019-11-15 22:36:17,381 INFO L226 Difference]: Without dead ends: 9543 [2019-11-15 22:36:17,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:36:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9543 states. [2019-11-15 22:36:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9543 to 8187. [2019-11-15 22:36:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8187 states. [2019-11-15 22:36:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8187 states to 8187 states and 22093 transitions. [2019-11-15 22:36:17,967 INFO L78 Accepts]: Start accepts. Automaton has 8187 states and 22093 transitions. Word has length 42 [2019-11-15 22:36:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:17,972 INFO L462 AbstractCegarLoop]: Abstraction has 8187 states and 22093 transitions. [2019-11-15 22:36:17,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:36:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8187 states and 22093 transitions. [2019-11-15 22:36:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 22:36:17,980 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:17,980 INFO L380 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, 1, 1] [2019-11-15 22:36:18,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:18,184 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:18,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:18,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1148887482, now seen corresponding path program 1 times [2019-11-15 22:36:18,186 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:36:18,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [814671869] [2019-11-15 22:36:18,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:18,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:36:18,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:18,364 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:36:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:18,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [814671869] [2019-11-15 22:36:18,389 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:18,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 22:36:18,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90096378] [2019-11-15 22:36:18,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:36:18,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:36:18,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:36:18,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:36:18,399 INFO L87 Difference]: Start difference. First operand 8187 states and 22093 transitions. Second operand 4 states. [2019-11-15 22:36:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:18,700 INFO L93 Difference]: Finished difference Result 12888 states and 34483 transitions. [2019-11-15 22:36:18,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:36:18,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-15 22:36:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:18,789 INFO L225 Difference]: With dead ends: 12888 [2019-11-15 22:36:18,789 INFO L226 Difference]: Without dead ends: 12735 [2019-11-15 22:36:18,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:36:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2019-11-15 22:36:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 11028. [2019-11-15 22:36:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11028 states. [2019-11-15 22:36:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11028 states to 11028 states and 29887 transitions. [2019-11-15 22:36:19,216 INFO L78 Accepts]: Start accepts. Automaton has 11028 states and 29887 transitions. Word has length 43 [2019-11-15 22:36:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:19,216 INFO L462 AbstractCegarLoop]: Abstraction has 11028 states and 29887 transitions. [2019-11-15 22:36:19,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:36:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11028 states and 29887 transitions. [2019-11-15 22:36:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-15 22:36:19,221 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:19,221 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:36:19,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:19,423 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1561423665, now seen corresponding path program 1 times [2019-11-15 22:36:19,424 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:36:19,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [999074408] [2019-11-15 22:36:19,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:19,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 22:36:19,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:19,590 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:36:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:19,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [999074408] [2019-11-15 22:36:19,621 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:19,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 22:36:19,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230178466] [2019-11-15 22:36:19,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:36:19,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:36:19,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:36:19,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:36:19,624 INFO L87 Difference]: Start difference. First operand 11028 states and 29887 transitions. Second operand 6 states. [2019-11-15 22:36:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:19,743 INFO L93 Difference]: Finished difference Result 13794 states and 37287 transitions. [2019-11-15 22:36:19,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:36:19,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-11-15 22:36:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:19,794 INFO L225 Difference]: With dead ends: 13794 [2019-11-15 22:36:19,794 INFO L226 Difference]: Without dead ends: 13794 [2019-11-15 22:36:19,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:36:19,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13794 states. [2019-11-15 22:36:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13794 to 11136. [2019-11-15 22:36:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11136 states. [2019-11-15 22:36:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 30149 transitions. [2019-11-15 22:36:20,200 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 30149 transitions. Word has length 51 [2019-11-15 22:36:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:20,201 INFO L462 AbstractCegarLoop]: Abstraction has 11136 states and 30149 transitions. [2019-11-15 22:36:20,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:36:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 30149 transitions. [2019-11-15 22:36:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-15 22:36:20,216 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:20,217 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-11-15 22:36:20,419 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:20,420 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:20,420 INFO L82 PathProgramCache]: Analyzing trace with hash 190287178, now seen corresponding path program 1 times [2019-11-15 22:36:20,421 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:36:20,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [644987642] [2019-11-15 22:36:20,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:20,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:36:20,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:20,669 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:36:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:20,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [644987642] [2019-11-15 22:36:20,742 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:36:20,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 22:36:20,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358747788] [2019-11-15 22:36:20,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:36:20,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:36:20,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:36:20,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:36:20,745 INFO L87 Difference]: Start difference. First operand 11136 states and 30149 transitions. Second operand 8 states. [2019-11-15 22:36:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:21,280 INFO L93 Difference]: Finished difference Result 21591 states and 57325 transitions. [2019-11-15 22:36:21,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 22:36:21,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2019-11-15 22:36:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:21,334 INFO L225 Difference]: With dead ends: 21591 [2019-11-15 22:36:21,335 INFO L226 Difference]: Without dead ends: 21591 [2019-11-15 22:36:21,335 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2019-11-15 22:36:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2019-11-15 22:36:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 17220. [2019-11-15 22:36:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17220 states. [2019-11-15 22:36:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17220 states to 17220 states and 46398 transitions. [2019-11-15 22:36:21,788 INFO L78 Accepts]: Start accepts. Automaton has 17220 states and 46398 transitions. Word has length 72 [2019-11-15 22:36:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:21,789 INFO L462 AbstractCegarLoop]: Abstraction has 17220 states and 46398 transitions. [2019-11-15 22:36:21,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:36:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 17220 states and 46398 transitions. [2019-11-15 22:36:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-15 22:36:21,798 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:21,798 INFO L380 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, 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] [2019-11-15 22:36:22,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:22,002 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash 965711622, now seen corresponding path program 1 times [2019-11-15 22:36:22,003 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:36:22,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [689444148] [2019-11-15 22:36:22,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:22,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:36:22,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:22,263 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 22:36:22,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:36:22,276 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:36:22,276 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:36:22,276 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-15 22:36:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:22,297 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:36:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:22,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [689444148] [2019-11-15 22:36:22,316 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:22,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 22:36:22,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640274778] [2019-11-15 22:36:22,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:36:22,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:36:22,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:36:22,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:36:22,318 INFO L87 Difference]: Start difference. First operand 17220 states and 46398 transitions. Second operand 3 states. [2019-11-15 22:36:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:36:22,365 INFO L93 Difference]: Finished difference Result 6777 states and 17257 transitions. [2019-11-15 22:36:22,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:36:22,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-11-15 22:36:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:36:22,383 INFO L225 Difference]: With dead ends: 6777 [2019-11-15 22:36:22,383 INFO L226 Difference]: Without dead ends: 6777 [2019-11-15 22:36:22,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:36:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2019-11-15 22:36:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6057. [2019-11-15 22:36:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6057 states. [2019-11-15 22:36:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6057 states to 6057 states and 15307 transitions. [2019-11-15 22:36:22,521 INFO L78 Accepts]: Start accepts. Automaton has 6057 states and 15307 transitions. Word has length 75 [2019-11-15 22:36:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:36:22,521 INFO L462 AbstractCegarLoop]: Abstraction has 6057 states and 15307 transitions. [2019-11-15 22:36:22,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:36:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6057 states and 15307 transitions. [2019-11-15 22:36:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-15 22:36:22,530 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:36:22,531 INFO L380 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, 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] [2019-11-15 22:36:22,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:22,734 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:36:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:36:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash -720461378, now seen corresponding path program 1 times [2019-11-15 22:36:22,735 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:36:22,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [782775213] [2019-11-15 22:36:22,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:36:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:36:23,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-15 22:36:23,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:36:23,561 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 22:36:23,562 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:36:23,609 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:36:23,609 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:36:23,610 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-15 22:36:23,770 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:36:23,771 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-15 22:36:23,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:36:23,777 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:36:23,814 INFO L567 ElimStorePlain]: treesize reduction 16, result has 56.8 percent of original size [2019-11-15 22:36:23,815 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:36:23,816 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-15 22:36:24,410 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:36:24,411 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2019-11-15 22:36:24,412 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:36:24,434 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:36:24,435 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:36:24,435 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2019-11-15 22:36:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:24,744 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:36:25,981 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2019-11-15 22:36:25,981 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 22:36:26,023 INFO L567 ElimStorePlain]: treesize reduction 17, result has 52.8 percent of original size [2019-11-15 22:36:26,024 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 22:36:26,024 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:19 [2019-11-15 22:36:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:36:26,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [782775213] [2019-11-15 22:36:26,899 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:36:26,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24, 20] imperfect sequences [] total 42 [2019-11-15 22:36:26,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624985095] [2019-11-15 22:36:26,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-15 22:36:26,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:36:26,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-15 22:36:26,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2019-11-15 22:36:26,901 INFO L87 Difference]: Start difference. First operand 6057 states and 15307 transitions. Second operand 42 states. [2019-11-15 22:36:30,428 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-11-15 22:36:32,751 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-15 22:36:44,476 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-15 22:36:45,034 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-15 22:36:48,585 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-11-15 22:36:51,165 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-11-15 22:36:53,581 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-15 22:36:56,586 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-15 22:36:57,816 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 22:36:59,074 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-15 22:37:00,598 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-15 22:37:02,356 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-15 22:37:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:37:02,399 INFO L93 Difference]: Finished difference Result 22241 states and 56157 transitions. [2019-11-15 22:37:02,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-11-15 22:37:02,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2019-11-15 22:37:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:37:02,448 INFO L225 Difference]: With dead ends: 22241 [2019-11-15 22:37:02,448 INFO L226 Difference]: Without dead ends: 21824 [2019-11-15 22:37:02,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10426 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=3431, Invalid=27019, Unknown=0, NotChecked=0, Total=30450 [2019-11-15 22:37:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21824 states. [2019-11-15 22:37:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21824 to 8459. [2019-11-15 22:37:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8459 states. [2019-11-15 22:37:02,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 21688 transitions. [2019-11-15 22:37:02,755 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 21688 transitions. Word has length 81 [2019-11-15 22:37:02,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:37:02,757 INFO L462 AbstractCegarLoop]: Abstraction has 8459 states and 21688 transitions. [2019-11-15 22:37:02,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-15 22:37:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 21688 transitions. [2019-11-15 22:37:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-15 22:37:02,781 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:37:02,781 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:37:02,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:37:02,985 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:37:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:37:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash 944231280, now seen corresponding path program 1 times [2019-11-15 22:37:02,986 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:37:02,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1058462615] [2019-11-15 22:37:02,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:37:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:37:03,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:37:03,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:37:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 22:37:03,166 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:37:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 22:37:03,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1058462615] [2019-11-15 22:37:03,287 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:37:03,287 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-15 22:37:03,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873380108] [2019-11-15 22:37:03,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:37:03,288 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:37:03,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:37:03,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:37:03,289 INFO L87 Difference]: Start difference. First operand 8459 states and 21688 transitions. Second operand 10 states. [2019-11-15 22:37:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:37:03,661 INFO L93 Difference]: Finished difference Result 15053 states and 38146 transitions. [2019-11-15 22:37:03,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 22:37:03,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-11-15 22:37:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:37:03,685 INFO L225 Difference]: With dead ends: 15053 [2019-11-15 22:37:03,685 INFO L226 Difference]: Without dead ends: 14522 [2019-11-15 22:37:03,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2019-11-15 22:37:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14522 states. [2019-11-15 22:37:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14522 to 8688. [2019-11-15 22:37:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2019-11-15 22:37:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 22311 transitions. [2019-11-15 22:37:03,903 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 22311 transitions. Word has length 102 [2019-11-15 22:37:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:37:03,904 INFO L462 AbstractCegarLoop]: Abstraction has 8688 states and 22311 transitions. [2019-11-15 22:37:03,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:37:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 22311 transitions. [2019-11-15 22:37:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-15 22:37:03,923 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:37:03,924 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:37:04,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:37:04,135 INFO L410 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:37:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:37:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1011151158, now seen corresponding path program 2 times [2019-11-15 22:37:04,136 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:37:04,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [923304166] [2019-11-15 22:37:04,136 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:37:04,441 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:37:04,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:37:04,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:37:04,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:37:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:37:04,516 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:37:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:37:04,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [923304166] [2019-11-15 22:37:04,688 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:37:04,688 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-15 22:37:04,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521272928] [2019-11-15 22:37:04,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 22:37:04,689 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:37:04,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 22:37:04,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2019-11-15 22:37:04,690 INFO L87 Difference]: Start difference. First operand 8688 states and 22311 transitions. Second operand 16 states. [2019-11-15 22:37:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:37:05,404 INFO L93 Difference]: Finished difference Result 19035 states and 48154 transitions. [2019-11-15 22:37:05,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 22:37:05,405 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 130 [2019-11-15 22:37:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:37:05,435 INFO L225 Difference]: With dead ends: 19035 [2019-11-15 22:37:05,435 INFO L226 Difference]: Without dead ends: 19035 [2019-11-15 22:37:05,436 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=751, Unknown=0, NotChecked=0, Total=1056 [2019-11-15 22:37:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19035 states. [2019-11-15 22:37:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19035 to 13737. [2019-11-15 22:37:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13737 states. [2019-11-15 22:37:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 35158 transitions. [2019-11-15 22:37:05,916 INFO L78 Accepts]: Start accepts. Automaton has 13737 states and 35158 transitions. Word has length 130 [2019-11-15 22:37:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:37:05,917 INFO L462 AbstractCegarLoop]: Abstraction has 13737 states and 35158 transitions. [2019-11-15 22:37:05,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 22:37:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 13737 states and 35158 transitions. [2019-11-15 22:37:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-15 22:37:05,938 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:37:05,938 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:37:06,148 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:37:06,149 INFO L410 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:37:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:37:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2428414, now seen corresponding path program 1 times [2019-11-15 22:37:06,150 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:37:06,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1820778550] [2019-11-15 22:37:06,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:37:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:37:06,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-15 22:37:06,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:37:06,820 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 22:37:06,821 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:37:06,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:37:06,837 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:37:06,837 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-15 22:37:06,989 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:37:06,989 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-15 22:37:06,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:37:06,997 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:37:07,029 INFO L567 ElimStorePlain]: treesize reduction 16, result has 56.8 percent of original size [2019-11-15 22:37:07,029 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:37:07,029 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-15 22:37:07,367 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 22:37:07,373 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:37:07,374 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-11-15 22:37:07,374 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:37:07,411 INFO L567 ElimStorePlain]: treesize reduction 16, result has 66.7 percent of original size [2019-11-15 22:37:07,411 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:37:07,412 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:21 [2019-11-15 22:37:08,218 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:37:08,219 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2019-11-15 22:37:08,219 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:37:08,229 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:37:08,230 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:37:08,230 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2019-11-15 22:37:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:37:08,533 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:37:11,499 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2019-11-15 22:37:11,500 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 22:37:11,573 INFO L567 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2019-11-15 22:37:11,573 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 22:37:11,573 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2019-11-15 22:37:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:37:12,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820778550] [2019-11-15 22:37:12,430 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:37:12,431 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27] total 56 [2019-11-15 22:37:12,431 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907677789] [2019-11-15 22:37:12,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-15 22:37:12,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:37:12,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-15 22:37:12,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 22:37:12,432 INFO L87 Difference]: Start difference. First operand 13737 states and 35158 transitions. Second operand 56 states. [2019-11-15 22:37:15,330 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 22:37:15,925 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-15 22:37:16,733 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-15 22:37:17,378 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-11-15 22:37:18,031 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-11-15 22:37:18,583 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-11-15 22:37:19,027 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-11-15 22:37:19,498 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2019-11-15 22:37:19,932 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2019-11-15 22:37:20,335 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2019-11-15 22:37:20,663 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-11-15 22:37:21,524 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2019-11-15 22:37:22,423 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-11-15 22:37:22,744 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-11-15 22:37:23,646 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-15 22:37:23,957 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-15 22:37:24,866 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-11-15 22:37:25,221 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-15 22:37:25,618 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2019-11-15 22:37:25,923 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-11-15 22:37:26,218 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2019-11-15 22:37:30,613 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-11-15 22:37:31,018 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2019-11-15 22:37:31,337 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-11-15 22:37:31,705 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-11-15 22:37:32,023 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:37:34,353 WARN L191 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-11-15 22:37:34,988 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-11-15 22:37:35,283 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-11-15 22:37:35,672 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2019-11-15 22:37:36,069 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-11-15 22:37:36,449 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-11-15 22:37:36,860 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2019-11-15 22:37:37,195 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 22:37:39,595 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-11-15 22:37:39,935 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-11-15 22:37:40,345 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-11-15 22:37:40,654 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 22:37:43,348 WARN L191 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:37:43,792 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2019-11-15 22:37:44,216 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 22:37:44,672 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 22:37:49,232 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-15 22:37:49,596 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-11-15 22:37:50,236 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-11-15 22:37:50,570 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-11-15 22:37:50,977 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-15 22:37:51,460 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 22:37:53,887 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 22:37:54,420 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2019-11-15 22:37:59,067 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 22:37:59,517 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-11-15 22:37:59,844 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 22:38:00,204 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 22:38:02,623 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 22:38:03,058 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 22:38:03,474 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:38:06,382 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-15 22:38:06,711 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:38:09,167 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 22:38:09,465 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-11-15 22:38:09,805 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 22:38:10,223 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:38:10,602 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 22:38:13,162 WARN L191 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 22:38:16,800 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-11-15 22:38:17,156 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-11-15 22:38:17,599 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-11-15 22:38:18,379 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 22:38:20,811 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 22:38:21,193 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 22:38:21,558 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 22:38:22,126 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 22:38:24,717 WARN L191 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:38:27,222 WARN L191 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-11-15 22:38:29,921 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-11-15 22:38:30,317 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-15 22:38:30,696 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-11-15 22:38:30,993 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-11-15 22:38:35,414 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-11-15 22:38:35,819 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-11-15 22:38:36,238 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2019-11-15 22:38:36,732 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-11-15 22:38:37,168 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2019-11-15 22:38:37,615 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2019-11-15 22:38:38,131 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2019-11-15 22:38:38,531 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2019-11-15 22:38:39,014 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-11-15 22:38:39,409 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-11-15 22:38:39,858 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-11-15 22:38:40,594 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2019-11-15 22:38:41,019 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-15 22:38:41,771 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-11-15 22:38:42,285 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2019-11-15 22:38:42,743 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2019-11-15 22:38:43,607 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2019-11-15 22:38:50,151 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2019-11-15 22:38:50,519 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2019-11-15 22:38:50,976 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2019-11-15 22:38:55,331 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 22:38:55,798 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2019-11-15 22:38:58,739 WARN L191 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 22:39:01,295 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-11-15 22:39:03,968 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 22:39:04,404 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-11-15 22:39:04,710 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-15 22:39:05,263 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-11-15 22:39:05,725 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-11-15 22:39:06,031 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-11-15 22:39:08,733 WARN L191 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:39:11,242 WARN L191 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 22:39:11,611 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-15 22:39:14,282 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-11-15 22:39:16,728 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 22:39:19,419 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 22:39:19,739 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-11-15 22:39:20,326 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-15 22:39:20,693 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-11-15 22:39:23,441 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 22:39:26,297 WARN L191 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-11-15 22:39:27,394 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2019-11-15 22:39:27,734 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-11-15 22:39:28,078 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2019-11-15 22:39:28,427 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2019-11-15 22:39:28,759 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-11-15 22:39:29,429 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-11-15 22:39:30,038 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2019-11-15 22:39:30,940 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-11-15 22:39:31,399 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2019-11-15 22:39:32,145 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2019-11-15 22:39:33,063 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2019-11-15 22:39:33,429 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-11-15 22:39:34,313 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-11-15 22:39:38,854 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 22:39:41,221 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-11-15 22:39:44,127 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 22:39:44,599 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 22:39:48,583 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 22:39:48,877 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 22:39:49,286 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-11-15 22:39:49,634 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-11-15 22:39:50,065 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-15 22:39:50,573 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 22:39:54,046 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 22:39:54,361 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 22:39:55,716 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2019-11-15 22:39:56,267 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-15 22:39:56,918 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-11-15 22:39:57,526 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 76 [2019-11-15 22:39:58,391 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-11-15 22:39:58,890 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 80 [2019-11-15 22:39:59,354 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2019-11-15 22:39:59,897 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2019-11-15 22:40:09,374 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-11-15 22:40:11,753 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 22:40:12,382 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2019-11-15 22:40:14,751 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 22:40:23,091 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-15 22:40:25,443 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-15 22:40:27,890 WARN L191 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 22:40:30,326 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 22:40:32,721 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 22:40:35,787 WARN L191 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-11-15 22:40:38,108 WARN L191 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-11-15 22:40:38,677 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-15 22:40:39,124 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-15 22:40:39,613 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-11-15 22:40:40,115 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-11-15 22:40:40,507 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-11-15 22:40:40,874 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-11-15 22:40:41,200 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-11-15 22:40:41,693 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-11-15 22:40:46,381 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2019-11-15 22:40:48,676 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-11-15 22:40:49,249 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2019-11-15 22:40:51,543 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-11-15 22:40:54,003 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2019-11-15 22:40:56,356 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-11-15 22:40:56,645 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2019-11-15 22:40:56,942 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2019-11-15 22:40:59,269 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-11-15 22:40:59,622 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-11-15 22:41:02,215 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-11-15 22:41:04,791 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-11-15 22:41:07,335 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-11-15 22:41:09,692 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-11-15 22:41:09,999 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-11-15 22:41:10,372 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-11-15 22:41:10,677 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2019-11-15 22:41:11,063 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-15 22:41:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:11,075 INFO L93 Difference]: Finished difference Result 53780 states and 136053 transitions. [2019-11-15 22:41:11,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2019-11-15 22:41:11,075 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 137 [2019-11-15 22:41:11,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:11,125 INFO L225 Difference]: With dead ends: 53780 [2019-11-15 22:41:11,126 INFO L226 Difference]: Without dead ends: 52889 [2019-11-15 22:41:11,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 357 SyntacticMatches, 12 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45448 ImplicationChecksByTransitivity, 176.8s TimeCoverageRelationStatistics Valid=9823, Invalid=98088, Unknown=1, NotChecked=0, Total=107912 [2019-11-15 22:41:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52889 states. [2019-11-15 22:41:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52889 to 18310. [2019-11-15 22:41:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18310 states. [2019-11-15 22:41:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18310 states to 18310 states and 47342 transitions. [2019-11-15 22:41:11,621 INFO L78 Accepts]: Start accepts. Automaton has 18310 states and 47342 transitions. Word has length 137 [2019-11-15 22:41:11,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:11,621 INFO L462 AbstractCegarLoop]: Abstraction has 18310 states and 47342 transitions. [2019-11-15 22:41:11,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-11-15 22:41:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 18310 states and 47342 transitions. [2019-11-15 22:41:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-15 22:41:11,653 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:11,653 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:11,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:11,857 INFO L410 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:41:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1045269040, now seen corresponding path program 1 times [2019-11-15 22:41:11,858 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:41:11,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2066012781] [2019-11-15 22:41:11,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:12,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 22:41:12,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 65 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 22:41:12,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:41:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 65 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 22:41:12,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2066012781] [2019-11-15 22:41:12,417 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:12,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-15 22:41:12,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433536140] [2019-11-15 22:41:12,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 22:41:12,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:41:12,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 22:41:12,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-15 22:41:12,418 INFO L87 Difference]: Start difference. First operand 18310 states and 47342 transitions. Second operand 16 states. [2019-11-15 22:41:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:13,117 INFO L93 Difference]: Finished difference Result 32305 states and 82151 transitions. [2019-11-15 22:41:13,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-15 22:41:13,118 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2019-11-15 22:41:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:13,147 INFO L225 Difference]: With dead ends: 32305 [2019-11-15 22:41:13,148 INFO L226 Difference]: Without dead ends: 31444 [2019-11-15 22:41:13,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1167, Unknown=0, NotChecked=0, Total=1482 [2019-11-15 22:41:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31444 states. [2019-11-15 22:41:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31444 to 18345. [2019-11-15 22:41:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18345 states. [2019-11-15 22:41:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18345 states to 18345 states and 47540 transitions. [2019-11-15 22:41:13,432 INFO L78 Accepts]: Start accepts. Automaton has 18345 states and 47540 transitions. Word has length 158 [2019-11-15 22:41:13,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:13,432 INFO L462 AbstractCegarLoop]: Abstraction has 18345 states and 47540 transitions. [2019-11-15 22:41:13,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 22:41:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 18345 states and 47540 transitions. [2019-11-15 22:41:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 22:41:13,451 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:13,452 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-11-15 22:41:13,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:13,654 INFO L410 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:41:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:13,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1143429654, now seen corresponding path program 2 times [2019-11-15 22:41:13,655 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:41:13,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1128750212] [2019-11-15 22:41:13,655 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:13,899 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:41:13,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:41:13,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 22:41:13,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 195 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-15 22:41:13,984 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:41:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 195 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-15 22:41:14,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1128750212] [2019-11-15 22:41:14,158 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:14,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 22:41:14,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931609792] [2019-11-15 22:41:14,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 22:41:14,160 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:41:14,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 22:41:14,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-15 22:41:14,160 INFO L87 Difference]: Start difference. First operand 18345 states and 47540 transitions. Second operand 18 states. [2019-11-15 22:41:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:15,014 INFO L93 Difference]: Finished difference Result 40470 states and 102587 transitions. [2019-11-15 22:41:15,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-15 22:41:15,014 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 189 [2019-11-15 22:41:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:15,050 INFO L225 Difference]: With dead ends: 40470 [2019-11-15 22:41:15,050 INFO L226 Difference]: Without dead ends: 40470 [2019-11-15 22:41:15,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=527, Invalid=1923, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 22:41:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40470 states. [2019-11-15 22:41:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40470 to 23052. [2019-11-15 22:41:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23052 states. [2019-11-15 22:41:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23052 states to 23052 states and 59513 transitions. [2019-11-15 22:41:15,563 INFO L78 Accepts]: Start accepts. Automaton has 23052 states and 59513 transitions. Word has length 189 [2019-11-15 22:41:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:15,564 INFO L462 AbstractCegarLoop]: Abstraction has 23052 states and 59513 transitions. [2019-11-15 22:41:15,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 22:41:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 23052 states and 59513 transitions. [2019-11-15 22:41:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 22:41:15,580 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:15,581 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-11-15 22:41:15,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:15,786 INFO L410 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:41:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash 712836450, now seen corresponding path program 3 times [2019-11-15 22:41:15,787 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:41:15,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [402359833] [2019-11-15 22:41:15,787 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:16,133 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-15 22:41:16,134 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:41:16,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 22:41:16,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-15 22:41:16,217 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:41:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-15 22:41:16,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [402359833] [2019-11-15 22:41:16,402 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:16,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 22:41:16,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314984914] [2019-11-15 22:41:16,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 22:41:16,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:41:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 22:41:16,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-15 22:41:16,403 INFO L87 Difference]: Start difference. First operand 23052 states and 59513 transitions. Second operand 18 states. [2019-11-15 22:41:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:17,231 INFO L93 Difference]: Finished difference Result 53670 states and 136199 transitions. [2019-11-15 22:41:17,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-15 22:41:17,232 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 189 [2019-11-15 22:41:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:17,284 INFO L225 Difference]: With dead ends: 53670 [2019-11-15 22:41:17,284 INFO L226 Difference]: Without dead ends: 53670 [2019-11-15 22:41:17,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=493, Invalid=1763, Unknown=0, NotChecked=0, Total=2256 [2019-11-15 22:41:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53670 states. [2019-11-15 22:41:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53670 to 32568. [2019-11-15 22:41:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32568 states. [2019-11-15 22:41:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32568 states to 32568 states and 84984 transitions. [2019-11-15 22:41:17,780 INFO L78 Accepts]: Start accepts. Automaton has 32568 states and 84984 transitions. Word has length 189 [2019-11-15 22:41:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:17,780 INFO L462 AbstractCegarLoop]: Abstraction has 32568 states and 84984 transitions. [2019-11-15 22:41:17,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 22:41:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 32568 states and 84984 transitions. [2019-11-15 22:41:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 22:41:17,797 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:17,797 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-11-15 22:41:17,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:17,998 INFO L410 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:41:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:17,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1366355130, now seen corresponding path program 4 times [2019-11-15 22:41:17,998 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:41:17,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [651888942] [2019-11-15 22:41:17,999 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:18,161 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 22:41:18,162 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:41:18,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 22:41:18,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-15 22:41:18,256 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:41:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-15 22:41:18,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [651888942] [2019-11-15 22:41:18,652 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:18,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 22:41:18,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205840860] [2019-11-15 22:41:18,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 22:41:18,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:41:18,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 22:41:18,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-15 22:41:18,653 INFO L87 Difference]: Start difference. First operand 32568 states and 84984 transitions. Second operand 18 states. [2019-11-15 22:41:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:19,437 INFO L93 Difference]: Finished difference Result 58623 states and 150084 transitions. [2019-11-15 22:41:19,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-15 22:41:19,438 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 189 [2019-11-15 22:41:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:19,495 INFO L225 Difference]: With dead ends: 58623 [2019-11-15 22:41:19,496 INFO L226 Difference]: Without dead ends: 58623 [2019-11-15 22:41:19,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1469, Unknown=0, NotChecked=0, Total=1892 [2019-11-15 22:41:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58623 states. [2019-11-15 22:41:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58623 to 41322. [2019-11-15 22:41:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41322 states. [2019-11-15 22:41:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41322 states to 41322 states and 108829 transitions. [2019-11-15 22:41:20,076 INFO L78 Accepts]: Start accepts. Automaton has 41322 states and 108829 transitions. Word has length 189 [2019-11-15 22:41:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:20,077 INFO L462 AbstractCegarLoop]: Abstraction has 41322 states and 108829 transitions. [2019-11-15 22:41:20,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 22:41:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 41322 states and 108829 transitions. [2019-11-15 22:41:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-15 22:41:20,102 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:20,103 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:20,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:20,305 INFO L410 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:41:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1499211482, now seen corresponding path program 2 times [2019-11-15 22:41:20,306 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:41:20,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1893475148] [2019-11-15 22:41:20,306 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 22:41:20,676 ERROR L273 tionRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-15 22:41:20,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737923912] [2019-11-15 22:41:20,677 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ce47f5-57d4-48d3-a97b-7600537d1fa5/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:41:20,852 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:41:20,852 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:41:20,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-15 22:41:20,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:21,054 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 22:41:21,055 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:41:21,077 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:41:21,077 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:41:21,077 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-15 22:41:21,280 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:41:21,281 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-15 22:41:21,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:41:21,283 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:41:21,330 INFO L567 ElimStorePlain]: treesize reduction 16, result has 56.8 percent of original size [2019-11-15 22:41:21,330 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:41:21,330 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-15 22:41:21,627 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 22:41:21,632 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:41:21,633 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-11-15 22:41:21,633 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:41:21,663 INFO L567 ElimStorePlain]: treesize reduction 16, result has 66.7 percent of original size [2019-11-15 22:41:21,664 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:41:21,664 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:21 [2019-11-15 22:41:21,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 22:41:22,002 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:41:22,003 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-11-15 22:41:22,003 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:41:22,035 INFO L567 ElimStorePlain]: treesize reduction 12, result has 72.7 percent of original size [2019-11-15 22:41:22,035 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:41:22,035 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:21 [2019-11-15 22:41:22,905 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:41:22,905 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2019-11-15 22:41:22,905 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:41:22,914 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:41:22,914 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:41:22,914 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2019-11-15 22:41:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:41:23,524 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:41:28,221 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2019-11-15 22:41:28,221 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 22:41:28,299 INFO L567 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2019-11-15 22:41:28,299 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 22:41:28,299 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2019-11-15 22:41:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 139 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:41:29,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1893475148] [2019-11-15 22:41:29,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:41:29,532 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Do not try to interpolate when trace is feasible at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 22:41:29,536 INFO L168 Benchmark]: Toolchain (without parser) took 315664.51 ms. Allocated memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: 1.1 GB). Free memory was 944.3 MB in the beginning and 1.3 GB in the end (delta: -396.3 MB). Peak memory consumption was 684.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:29,537 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:41:29,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1029.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -116.9 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:29,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.53 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. [2019-11-15 22:41:29,538 INFO L168 Benchmark]: Boogie Preprocessor took 90.54 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:29,541 INFO L168 Benchmark]: RCFGBuilder took 802.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:29,542 INFO L168 Benchmark]: TraceAbstraction took 313634.33 ms. Allocated memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: 955.3 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -316.8 MB). Peak memory consumption was 638.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:29,545 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1029.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -116.9 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.53 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. * Boogie Preprocessor took 90.54 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 802.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 313634.33 ms. Allocated memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: 955.3 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -316.8 MB). Peak memory consumption was 638.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Do not try to interpolate when trace is feasible de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Do not try to interpolate when trace is feasible : de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:328) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...