./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd13eb8db6a6bb215c2d42af70a6b175025c5d6b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd13eb8db6a6bb215c2d42af70a6b175025c5d6b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:23:48,610 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:23:48,611 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:23:48,617 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:23:48,617 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:23:48,618 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:23:48,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:23:48,619 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:23:48,620 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:23:48,620 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:23:48,621 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:23:48,621 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:23:48,621 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:23:48,622 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:23:48,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:23:48,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:23:48,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:23:48,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:23:48,625 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:23:48,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:23:48,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:23:48,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:23:48,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:23:48,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:23:48,628 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:23:48,628 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:23:48,629 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:23:48,629 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:23:48,629 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:23:48,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:23:48,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:23:48,630 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:23:48,630 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:23:48,630 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:23:48,631 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:23:48,631 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:23:48,631 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:23:48,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:23:48,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:23:48,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:23:48,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:23:48,639 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:23:48,640 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:23:48,640 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:23:48,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:23:48,641 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:23:48,641 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan 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 -> Taipan 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 -> dd13eb8db6a6bb215c2d42af70a6b175025c5d6b [2018-12-09 19:23:48,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:23:48,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:23:48,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:23:48,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:23:48,668 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:23:48,668 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_true-unreach-call.i [2018-12-09 19:23:48,706 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/243a48b12/290712ff009f4f0dad87cf158999c8a8/FLAGbf5ed4be2 [2018-12-09 19:23:49,165 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:23:49,165 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/sv-benchmarks/c/pthread/stack_true-unreach-call.i [2018-12-09 19:23:49,172 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/243a48b12/290712ff009f4f0dad87cf158999c8a8/FLAGbf5ed4be2 [2018-12-09 19:23:49,180 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/243a48b12/290712ff009f4f0dad87cf158999c8a8 [2018-12-09 19:23:49,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:23:49,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:23:49,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:23:49,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:23:49,185 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:23:49,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198b87e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49, skipping insertion in model container [2018-12-09 19:23:49,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:23:49,214 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:23:49,460 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:23:49,469 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:23:49,496 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:23:49,552 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:23:49,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49 WrapperNode [2018-12-09 19:23:49,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:23:49,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:23:49,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:23:49,553 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:23:49,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:23:49,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:23:49,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:23:49,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:23:49,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... [2018-12-09 19:23:49,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:23:49,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:23:49,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:23:49,600 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:23:49,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 19:23:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 19:23:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 19:23:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 19:23:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:23:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:23:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 19:23:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:23:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 19:23:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 19:23:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:23:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:23:49,634 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 19:23:49,854 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:23:49,854 INFO L280 CfgBuilder]: Removed 22 assue(true) statements. [2018-12-09 19:23:49,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:23:49 BoogieIcfgContainer [2018-12-09 19:23:49,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:23:49,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:23:49,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:23:49,856 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:23:49,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:23:49" (1/3) ... [2018-12-09 19:23:49,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9368bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:23:49, skipping insertion in model container [2018-12-09 19:23:49,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:49" (2/3) ... [2018-12-09 19:23:49,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9368bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:23:49, skipping insertion in model container [2018-12-09 19:23:49,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:23:49" (3/3) ... [2018-12-09 19:23:49,858 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_true-unreach-call.i [2018-12-09 19:23:49,879 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,880 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,882 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,883 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,884 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,885 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,886 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,887 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,888 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,889 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,890 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:49,899 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 19:23:49,900 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:23:49,906 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 19:23:49,916 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 19:23:49,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:23:49,933 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:23:49,933 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:23:49,933 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:23:49,933 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:23:49,933 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:23:49,933 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:23:49,933 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:23:49,940 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 126places, 134 transitions [2018-12-09 19:23:50,047 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5572 states. [2018-12-09 19:23:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states. [2018-12-09 19:23:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-09 19:23:50,068 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:50,068 INFO L402 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] [2018-12-09 19:23:50,071 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:50,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash 89899501, now seen corresponding path program 1 times [2018-12-09 19:23:50,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:23:50,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:50,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:50,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:50,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:23:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:50,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:50,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:23:50,233 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:23:50,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:23:50,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:23:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:50,246 INFO L87 Difference]: Start difference. First operand 5572 states. Second operand 3 states. [2018-12-09 19:23:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:50,342 INFO L93 Difference]: Finished difference Result 8083 states and 21427 transitions. [2018-12-09 19:23:50,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:23:50,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-09 19:23:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:50,381 INFO L225 Difference]: With dead ends: 8083 [2018-12-09 19:23:50,381 INFO L226 Difference]: Without dead ends: 7822 [2018-12-09 19:23:50,383 INFO L631 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 [2018-12-09 19:23:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2018-12-09 19:23:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 7534. [2018-12-09 19:23:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7534 states. [2018-12-09 19:23:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7534 states to 7534 states and 20177 transitions. [2018-12-09 19:23:50,565 INFO L78 Accepts]: Start accepts. Automaton has 7534 states and 20177 transitions. Word has length 47 [2018-12-09 19:23:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:50,566 INFO L480 AbstractCegarLoop]: Abstraction has 7534 states and 20177 transitions. [2018-12-09 19:23:50,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:23:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7534 states and 20177 transitions. [2018-12-09 19:23:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 19:23:50,568 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:50,568 INFO L402 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] [2018-12-09 19:23:50,569 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:50,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:50,569 INFO L82 PathProgramCache]: Analyzing trace with hash 867818314, now seen corresponding path program 1 times [2018-12-09 19:23:50,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:23:50,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:50,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:50,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:50,572 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:23:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:50,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:50,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 19:23:50,621 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:23:50,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:23:50,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:23:50,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:23:50,622 INFO L87 Difference]: Start difference. First operand 7534 states and 20177 transitions. Second operand 4 states. [2018-12-09 19:23:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:50,705 INFO L93 Difference]: Finished difference Result 11071 states and 29552 transitions. [2018-12-09 19:23:50,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:23:50,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-12-09 19:23:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:50,730 INFO L225 Difference]: With dead ends: 11071 [2018-12-09 19:23:50,730 INFO L226 Difference]: Without dead ends: 11071 [2018-12-09 19:23:50,731 INFO L631 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 [2018-12-09 19:23:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11071 states. [2018-12-09 19:23:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 8101. [2018-12-09 19:23:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8101 states. [2018-12-09 19:23:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 21689 transitions. [2018-12-09 19:23:50,883 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 21689 transitions. Word has length 57 [2018-12-09 19:23:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:50,883 INFO L480 AbstractCegarLoop]: Abstraction has 8101 states and 21689 transitions. [2018-12-09 19:23:50,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:23:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 21689 transitions. [2018-12-09 19:23:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-12-09 19:23:50,886 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:50,886 INFO L402 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] [2018-12-09 19:23:50,887 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:50,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash -234825026, now seen corresponding path program 1 times [2018-12-09 19:23:50,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:23:50,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:50,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:50,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:50,889 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:23:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:50,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:50,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:23:50,922 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:23:50,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:23:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:23:50,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:50,922 INFO L87 Difference]: Start difference. First operand 8101 states and 21689 transitions. Second operand 3 states. [2018-12-09 19:23:50,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:50,951 INFO L93 Difference]: Finished difference Result 3604 states and 9092 transitions. [2018-12-09 19:23:50,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:23:50,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-12-09 19:23:50,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:50,959 INFO L225 Difference]: With dead ends: 3604 [2018-12-09 19:23:50,960 INFO L226 Difference]: Without dead ends: 3604 [2018-12-09 19:23:50,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2018-12-09 19:23:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3316. [2018-12-09 19:23:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3316 states. [2018-12-09 19:23:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 8357 transitions. [2018-12-09 19:23:51,020 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 8357 transitions. Word has length 72 [2018-12-09 19:23:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:51,021 INFO L480 AbstractCegarLoop]: Abstraction has 3316 states and 8357 transitions. [2018-12-09 19:23:51,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:23:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 8357 transitions. [2018-12-09 19:23:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-09 19:23:51,026 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:51,026 INFO L402 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] [2018-12-09 19:23:51,026 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:51,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1067901449, now seen corresponding path program 1 times [2018-12-09 19:23:51,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:23:51,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:51,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:51,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:51,029 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:23:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:51,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:51,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:23:51,066 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:23:51,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:23:51,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:23:51,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:51,067 INFO L87 Difference]: Start difference. First operand 3316 states and 8357 transitions. Second operand 3 states. [2018-12-09 19:23:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:51,104 INFO L93 Difference]: Finished difference Result 4231 states and 10629 transitions. [2018-12-09 19:23:51,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:23:51,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2018-12-09 19:23:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:51,113 INFO L225 Difference]: With dead ends: 4231 [2018-12-09 19:23:51,113 INFO L226 Difference]: Without dead ends: 4231 [2018-12-09 19:23:51,113 INFO L631 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 [2018-12-09 19:23:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-12-09 19:23:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 3406. [2018-12-09 19:23:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3406 states. [2018-12-09 19:23:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 8558 transitions. [2018-12-09 19:23:51,180 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 8558 transitions. Word has length 79 [2018-12-09 19:23:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:51,180 INFO L480 AbstractCegarLoop]: Abstraction has 3406 states and 8558 transitions. [2018-12-09 19:23:51,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:23:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 8558 transitions. [2018-12-09 19:23:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-09 19:23:51,185 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:51,185 INFO L402 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, 1, 1, 1, 1] [2018-12-09 19:23:51,186 INFO L423 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:51,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash 998186936, now seen corresponding path program 1 times [2018-12-09 19:23:51,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:23:51,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:51,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:51,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:23:51,188 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:23:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:51,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:23:51,250 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:23:51,251 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) Caused by: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-09 19:23:51,253 INFO L168 Benchmark]: Toolchain (without parser) took 2070.72 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 287.3 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -97.4 MB). Peak memory consumption was 189.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:23:51,254 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:23:51,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:23:51,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.68 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:23:51,256 INFO L168 Benchmark]: Boogie Preprocessor took 17.10 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. [2018-12-09 19:23:51,256 INFO L168 Benchmark]: RCFGBuilder took 253.98 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2018-12-09 19:23:51,256 INFO L168 Benchmark]: TraceAbstraction took 1398.21 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 148.4 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 153.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:23:51,259 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.68 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.10 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. * RCFGBuilder took 253.98 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1398.21 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 148.4 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 153.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:23:52,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:23:52,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:23:52,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:23:52,663 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:23:52,663 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:23:52,664 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:23:52,665 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:23:52,666 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:23:52,666 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:23:52,666 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:23:52,666 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:23:52,667 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:23:52,667 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:23:52,668 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:23:52,668 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:23:52,669 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:23:52,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:23:52,670 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:23:52,671 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:23:52,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:23:52,672 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:23:52,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:23:52,674 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:23:52,674 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:23:52,674 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:23:52,675 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:23:52,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:23:52,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:23:52,676 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:23:52,676 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:23:52,677 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:23:52,677 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:23:52,677 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:23:52,678 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:23:52,678 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:23:52,678 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 19:23:52,685 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:23:52,686 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:23:52,686 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:23:52,686 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:23:52,686 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:23:52,686 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:23:52,686 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:23:52,686 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:23:52,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:23:52,687 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:23:52,688 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:23:52,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:23:52,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:23:52,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:23:52,689 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:23:52,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:23:52,689 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:23:52,689 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 19:23:52,689 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan 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 -> Taipan 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 -> dd13eb8db6a6bb215c2d42af70a6b175025c5d6b [2018-12-09 19:23:52,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:23:52,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:23:52,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:23:52,721 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:23:52,721 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:23:52,722 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_true-unreach-call.i [2018-12-09 19:23:52,767 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/f40817981/51bf56a43cd34f24a886c7c88f5dd3e1/FLAG7c06e104f [2018-12-09 19:23:53,212 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:23:53,212 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/sv-benchmarks/c/pthread/stack_true-unreach-call.i [2018-12-09 19:23:53,223 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/f40817981/51bf56a43cd34f24a886c7c88f5dd3e1/FLAG7c06e104f [2018-12-09 19:23:53,234 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/data/f40817981/51bf56a43cd34f24a886c7c88f5dd3e1 [2018-12-09 19:23:53,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:23:53,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:23:53,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:23:53,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:23:53,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:23:53,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7834880b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53, skipping insertion in model container [2018-12-09 19:23:53,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:23:53,269 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:23:53,492 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:23:53,504 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:23:53,564 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:23:53,622 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:23:53,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53 WrapperNode [2018-12-09 19:23:53,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:23:53,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:23:53,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:23:53,623 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:23:53,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:23:53,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:23:53,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:23:53,654 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:23:53,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... [2018-12-09 19:23:53,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:23:53,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:23:53,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:23:53,674 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:23:53,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 19:23:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 19:23:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 19:23:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 19:23:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:23:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:23:53,707 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 19:23:53,935 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:23:53,936 INFO L280 CfgBuilder]: Removed 22 assue(true) statements. [2018-12-09 19:23:53,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:23:53 BoogieIcfgContainer [2018-12-09 19:23:53,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:23:53,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:23:53,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:23:53,939 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:23:53,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:23:53" (1/3) ... [2018-12-09 19:23:53,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f351333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:23:53, skipping insertion in model container [2018-12-09 19:23:53,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:23:53" (2/3) ... [2018-12-09 19:23:53,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f351333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:23:53, skipping insertion in model container [2018-12-09 19:23:53,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:23:53" (3/3) ... [2018-12-09 19:23:53,941 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_true-unreach-call.i [2018-12-09 19:23:53,964 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,964 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,964 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,964 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,964 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,964 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,965 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,965 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,965 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,965 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,965 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,965 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,966 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,966 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,966 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,966 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,966 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,966 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,967 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,968 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,969 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,970 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,970 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,970 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,970 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,970 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,970 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,971 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,971 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,971 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,971 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,971 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,971 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,972 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,973 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,973 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,973 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,973 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,973 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,974 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,974 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,974 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,974 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,974 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,974 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,975 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,975 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,975 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,975 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,975 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,975 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,976 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,977 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,978 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,978 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,978 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,978 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,978 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,978 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,979 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,979 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,979 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,979 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,979 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,979 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,980 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,980 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,980 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,980 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,980 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,980 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,981 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,981 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,981 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,981 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,981 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,981 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:23:53,993 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 19:23:53,993 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:23:54,000 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 19:23:54,010 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 19:23:54,024 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:23:54,024 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:23:54,025 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:23:54,025 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:23:54,025 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:23:54,025 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:23:54,025 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:23:54,025 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:23:54,025 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:23:54,031 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 122places, 130 transitions [2018-12-09 19:23:54,142 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5068 states. [2018-12-09 19:23:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states. [2018-12-09 19:23:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 19:23:54,158 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:54,159 INFO L402 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] [2018-12-09 19:23:54,160 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:54,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:54,164 INFO L82 PathProgramCache]: Analyzing trace with hash 86707198, now seen corresponding path program 1 times [2018-12-09 19:23:54,167 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:23:54,167 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:54,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:54,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:23:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:54,294 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:23:54,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:54,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:23:54,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:23:54,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:23:54,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:54,315 INFO L87 Difference]: Start difference. First operand 5068 states. Second operand 3 states. [2018-12-09 19:23:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:54,411 INFO L93 Difference]: Finished difference Result 7351 states and 19477 transitions. [2018-12-09 19:23:54,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:23:54,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-12-09 19:23:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:54,441 INFO L225 Difference]: With dead ends: 7351 [2018-12-09 19:23:54,441 INFO L226 Difference]: Without dead ends: 7090 [2018-12-09 19:23:54,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7090 states. [2018-12-09 19:23:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7090 to 6823. [2018-12-09 19:23:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6823 states. [2018-12-09 19:23:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6823 states to 6823 states and 18275 transitions. [2018-12-09 19:23:54,611 INFO L78 Accepts]: Start accepts. Automaton has 6823 states and 18275 transitions. Word has length 46 [2018-12-09 19:23:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:54,612 INFO L480 AbstractCegarLoop]: Abstraction has 6823 states and 18275 transitions. [2018-12-09 19:23:54,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:23:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6823 states and 18275 transitions. [2018-12-09 19:23:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-12-09 19:23:54,614 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:54,614 INFO L402 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] [2018-12-09 19:23:54,614 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:54,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1877452049, now seen corresponding path program 1 times [2018-12-09 19:23:54,615 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:23:54,615 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:54,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:54,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:23:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:54,682 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:23:54,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:54,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 19:23:54,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:23:54,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:23:54,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:23:54,685 INFO L87 Difference]: Start difference. First operand 6823 states and 18275 transitions. Second operand 4 states. [2018-12-09 19:23:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:54,774 INFO L93 Difference]: Finished difference Result 10000 states and 26696 transitions. [2018-12-09 19:23:54,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:23:54,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-12-09 19:23:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:54,797 INFO L225 Difference]: With dead ends: 10000 [2018-12-09 19:23:54,797 INFO L226 Difference]: Without dead ends: 10000 [2018-12-09 19:23:54,798 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:23:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2018-12-09 19:23:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 7183. [2018-12-09 19:23:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7183 states. [2018-12-09 19:23:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 19235 transitions. [2018-12-09 19:23:54,942 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 19235 transitions. Word has length 55 [2018-12-09 19:23:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:54,942 INFO L480 AbstractCegarLoop]: Abstraction has 7183 states and 19235 transitions. [2018-12-09 19:23:54,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:23:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 19235 transitions. [2018-12-09 19:23:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-12-09 19:23:54,946 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:54,946 INFO L402 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] [2018-12-09 19:23:54,946 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:54,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:54,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1533879581, now seen corresponding path program 1 times [2018-12-09 19:23:54,947 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:23:54,947 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:54,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:55,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:23:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:55,032 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:23:55,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:55,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:23:55,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:23:55,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:23:55,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:23:55,033 INFO L87 Difference]: Start difference. First operand 7183 states and 19235 transitions. Second operand 5 states. [2018-12-09 19:23:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:55,142 INFO L93 Difference]: Finished difference Result 10789 states and 28539 transitions. [2018-12-09 19:23:55,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:23:55,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2018-12-09 19:23:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:55,166 INFO L225 Difference]: With dead ends: 10789 [2018-12-09 19:23:55,166 INFO L226 Difference]: Without dead ends: 10789 [2018-12-09 19:23:55,166 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:23:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10789 states. [2018-12-09 19:23:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10789 to 10195. [2018-12-09 19:23:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10195 states. [2018-12-09 19:23:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10195 states to 10195 states and 27139 transitions. [2018-12-09 19:23:55,296 INFO L78 Accepts]: Start accepts. Automaton has 10195 states and 27139 transitions. Word has length 70 [2018-12-09 19:23:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:55,296 INFO L480 AbstractCegarLoop]: Abstraction has 10195 states and 27139 transitions. [2018-12-09 19:23:55,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:23:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 10195 states and 27139 transitions. [2018-12-09 19:23:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-09 19:23:55,301 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:55,301 INFO L402 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] [2018-12-09 19:23:55,301 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:55,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:55,301 INFO L82 PathProgramCache]: Analyzing trace with hash -417734679, now seen corresponding path program 1 times [2018-12-09 19:23:55,301 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:23:55,301 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:55,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:55,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:23:55,414 INFO L478 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 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-09 19:23:55,417 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-12-09 19:23:55,417 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:23:55,419 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:23:55,421 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:23:55,421 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-12-09 19:23:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:55,436 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:23:55,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:55,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:23:55,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:23:55,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:23:55,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:55,438 INFO L87 Difference]: Start difference. First operand 10195 states and 27139 transitions. Second operand 3 states. [2018-12-09 19:23:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:23:55,477 INFO L93 Difference]: Finished difference Result 4849 states and 12205 transitions. [2018-12-09 19:23:55,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:23:55,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2018-12-09 19:23:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:23:55,487 INFO L225 Difference]: With dead ends: 4849 [2018-12-09 19:23:55,487 INFO L226 Difference]: Without dead ends: 4849 [2018-12-09 19:23:55,488 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:23:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2018-12-09 19:23:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 4543. [2018-12-09 19:23:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4543 states. [2018-12-09 19:23:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 11420 transitions. [2018-12-09 19:23:55,539 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 11420 transitions. Word has length 79 [2018-12-09 19:23:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:23:55,540 INFO L480 AbstractCegarLoop]: Abstraction has 4543 states and 11420 transitions. [2018-12-09 19:23:55,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:23:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 11420 transitions. [2018-12-09 19:23:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-12-09 19:23:55,543 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:23:55,543 INFO L402 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] [2018-12-09 19:23:55,543 INFO L423 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:23:55,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:23:55,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1008315293, now seen corresponding path program 1 times [2018-12-09 19:23:55,544 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:23:55,544 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:23:55,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:23:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:23:55,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:23:55,821 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:23:55,824 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:23:55,825 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:23:55,828 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:23:55,842 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:23:55,843 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:23:56,141 INFO L478 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 15 treesize of output 11 [2018-12-09 19:23:56,143 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:23:56,144 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:23:56,146 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:23:56,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:23:56,148 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:23:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:23:56,344 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:23:56,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:23:56,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-12-09 19:23:56,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 19:23:56,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 19:23:56,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-12-09 19:23:56,347 INFO L87 Difference]: Start difference. First operand 4543 states and 11420 transitions. Second operand 22 states. [2018-12-09 19:24:00,992 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 19:24:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:24:01,558 INFO L93 Difference]: Finished difference Result 9385 states and 23528 transitions. [2018-12-09 19:24:01,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-09 19:24:01,558 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 85 [2018-12-09 19:24:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:24:01,575 INFO L225 Difference]: With dead ends: 9385 [2018-12-09 19:24:01,575 INFO L226 Difference]: Without dead ends: 8788 [2018-12-09 19:24:01,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=443, Invalid=2313, Unknown=0, NotChecked=0, Total=2756 [2018-12-09 19:24:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2018-12-09 19:24:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 5368. [2018-12-09 19:24:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5368 states. [2018-12-09 19:24:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 13590 transitions. [2018-12-09 19:24:01,668 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 13590 transitions. Word has length 85 [2018-12-09 19:24:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:24:01,668 INFO L480 AbstractCegarLoop]: Abstraction has 5368 states and 13590 transitions. [2018-12-09 19:24:01,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 19:24:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 13590 transitions. [2018-12-09 19:24:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-12-09 19:24:01,672 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:24:01,673 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:24:01,673 INFO L423 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:24:01,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:24:01,673 INFO L82 PathProgramCache]: Analyzing trace with hash 309424711, now seen corresponding path program 1 times [2018-12-09 19:24:01,673 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:24:01,673 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:24:01,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:01,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:01,770 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:01,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:24:01,827 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:24:01,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:01,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:01,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-09 19:24:01,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-12-09 19:24:01,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7, 7] total 12 [2018-12-09 19:24:01,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 19:24:01,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 19:24:01,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-12-09 19:24:01,930 INFO L87 Difference]: Start difference. First operand 5368 states and 13590 transitions. Second operand 12 states. [2018-12-09 19:24:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:24:02,179 INFO L93 Difference]: Finished difference Result 11329 states and 28503 transitions. [2018-12-09 19:24:02,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 19:24:02,180 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2018-12-09 19:24:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:24:02,189 INFO L225 Difference]: With dead ends: 11329 [2018-12-09 19:24:02,189 INFO L226 Difference]: Without dead ends: 11329 [2018-12-09 19:24:02,189 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2018-12-09 19:24:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11329 states. [2018-12-09 19:24:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11329 to 6178. [2018-12-09 19:24:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6178 states. [2018-12-09 19:24:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 15562 transitions. [2018-12-09 19:24:02,264 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 15562 transitions. Word has length 105 [2018-12-09 19:24:02,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:24:02,264 INFO L480 AbstractCegarLoop]: Abstraction has 6178 states and 15562 transitions. [2018-12-09 19:24:02,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 19:24:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 15562 transitions. [2018-12-09 19:24:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-12-09 19:24:02,268 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:24:02,268 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:24:02,268 INFO L423 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:24:02,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:24:02,269 INFO L82 PathProgramCache]: Analyzing trace with hash -5717505, now seen corresponding path program 1 times [2018-12-09 19:24:02,269 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:24:02,269 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:24:02,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:02,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:02,533 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:24:02,536 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:24:02,536 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:02,538 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:02,548 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:02,548 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2018-12-09 19:24:02,872 INFO L478 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 15 treesize of output 11 [2018-12-09 19:24:02,874 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:24:02,874 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:02,876 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:02,877 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:02,878 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:24:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:03,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:03,892 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:24:03,895 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:24:03,895 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:03,896 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:03,901 INFO L478 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 26 treesize of output 24 [2018-12-09 19:24:03,905 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:24:03,905 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:03,909 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:03,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:24:03,932 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:24:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 19:24:04,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 19:24:04,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [24] total 42 [2018-12-09 19:24:04,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-09 19:24:04,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-09 19:24:04,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1611, Unknown=0, NotChecked=0, Total=1722 [2018-12-09 19:24:04,468 INFO L87 Difference]: Start difference. First operand 6178 states and 15562 transitions. Second operand 42 states. [2018-12-09 19:24:25,881 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-12-09 19:24:26,157 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-12-09 19:24:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:24:34,195 INFO L93 Difference]: Finished difference Result 15838 states and 39821 transitions. [2018-12-09 19:24:34,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-12-09 19:24:34,196 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 114 [2018-12-09 19:24:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:24:34,207 INFO L225 Difference]: With dead ends: 15838 [2018-12-09 19:24:34,207 INFO L226 Difference]: Without dead ends: 15838 [2018-12-09 19:24:34,211 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=3484, Invalid=29458, Unknown=0, NotChecked=0, Total=32942 [2018-12-09 19:24:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15838 states. [2018-12-09 19:24:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15838 to 7849. [2018-12-09 19:24:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7849 states. [2018-12-09 19:24:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7849 states to 7849 states and 19870 transitions. [2018-12-09 19:24:34,316 INFO L78 Accepts]: Start accepts. Automaton has 7849 states and 19870 transitions. Word has length 114 [2018-12-09 19:24:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:24:34,317 INFO L480 AbstractCegarLoop]: Abstraction has 7849 states and 19870 transitions. [2018-12-09 19:24:34,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-09 19:24:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7849 states and 19870 transitions. [2018-12-09 19:24:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-12-09 19:24:34,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:24:34,324 INFO L402 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, 1, 1, 1, 1] [2018-12-09 19:24:34,324 INFO L423 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:24:34,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:24:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash 443570260, now seen corresponding path program 1 times [2018-12-09 19:24:34,325 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:24:34,325 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:24:34,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:34,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:34,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:34,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:24:34,524 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:24:34,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:34,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:34,574 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:34,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:24:34,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 16 [2018-12-09 19:24:34,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 19:24:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 19:24:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-12-09 19:24:34,606 INFO L87 Difference]: Start difference. First operand 7849 states and 19870 transitions. Second operand 16 states. [2018-12-09 19:24:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:24:35,514 INFO L93 Difference]: Finished difference Result 22771 states and 57523 transitions. [2018-12-09 19:24:35,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-12-09 19:24:35,515 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2018-12-09 19:24:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:24:35,537 INFO L225 Difference]: With dead ends: 22771 [2018-12-09 19:24:35,537 INFO L226 Difference]: Without dead ends: 22771 [2018-12-09 19:24:35,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2018-12-09 19:24:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22771 states. [2018-12-09 19:24:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22771 to 17137. [2018-12-09 19:24:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17137 states. [2018-12-09 19:24:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17137 states to 17137 states and 43701 transitions. [2018-12-09 19:24:35,733 INFO L78 Accepts]: Start accepts. Automaton has 17137 states and 43701 transitions. Word has length 134 [2018-12-09 19:24:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:24:35,733 INFO L480 AbstractCegarLoop]: Abstraction has 17137 states and 43701 transitions. [2018-12-09 19:24:35,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 19:24:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 17137 states and 43701 transitions. [2018-12-09 19:24:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-12-09 19:24:35,742 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:24:35,742 INFO L402 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, 1, 1, 1, 1] [2018-12-09 19:24:35,742 INFO L423 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:24:35,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:24:35,742 INFO L82 PathProgramCache]: Analyzing trace with hash 854863353, now seen corresponding path program 1 times [2018-12-09 19:24:35,743 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:24:35,743 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:24:35,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:35,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:36,074 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:24:36,076 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:24:36,076 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,078 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,091 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,091 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:24:36,295 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:24:36,298 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:24:36,300 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:24:36,300 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,308 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,319 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,319 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:24:36,685 INFO L478 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 15 treesize of output 11 [2018-12-09 19:24:36,687 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:24:36,687 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,688 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,690 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:36,690 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:24:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:36,887 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:38,997 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:24:38,999 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:24:38,999 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,001 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,004 INFO L478 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 26 treesize of output 24 [2018-12-09 19:24:39,008 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:24:39,008 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,011 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,036 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:24:39,036 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:24:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:39,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:24:39,732 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:24:39,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:24:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:24:39,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:24:39,779 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:24:39,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:24:39,782 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,783 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,793 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,793 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:24:39,800 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:24:39,804 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:24:39,806 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:24:39,807 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,814 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,825 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,826 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:24:39,831 INFO L478 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 15 treesize of output 11 [2018-12-09 19:24:39,833 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:24:39,833 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,835 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:39,837 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:24:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:39,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:24:40,010 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:24:40,013 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:24:40,013 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:40,014 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:40,018 INFO L478 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 26 treesize of output 24 [2018-12-09 19:24:40,023 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:24:40,023 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:24:40,027 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:24:40,048 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:24:40,048 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:24:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:24:40,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:24:40,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 29, 27] total 54 [2018-12-09 19:24:40,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-09 19:24:40,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-09 19:24:40,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2696, Unknown=0, NotChecked=0, Total=2862 [2018-12-09 19:24:40,163 INFO L87 Difference]: Start difference. First operand 17137 states and 43701 transitions. Second operand 54 states. [2018-12-09 19:24:45,898 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-12-09 19:24:47,332 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2018-12-09 19:24:47,876 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-12-09 19:24:49,884 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-12-09 19:24:50,245 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:24:51,639 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-12-09 19:24:53,169 WARN L180 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-12-09 19:24:53,508 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2018-12-09 19:24:54,010 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-12-09 19:24:54,379 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-12-09 19:24:55,391 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-12-09 19:24:55,921 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-12-09 19:24:56,299 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-12-09 19:24:56,974 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:24:57,418 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-12-09 19:24:57,812 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 19:24:58,154 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:25:02,917 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-12-09 19:25:03,317 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:25:03,725 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-12-09 19:25:04,552 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:25:04,939 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-12-09 19:25:05,357 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:25:06,821 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-12-09 19:25:07,284 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:25:07,623 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-12-09 19:25:07,984 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-12-09 19:25:08,202 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-12-09 19:25:08,507 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-12-09 19:25:09,217 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:25:09,473 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-12-09 19:25:10,261 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-12-09 19:25:10,801 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-12-09 19:25:11,186 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-12-09 19:25:11,543 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:25:12,386 WARN L180 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-12-09 19:25:12,873 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2018-12-09 19:25:13,095 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-12-09 19:25:13,407 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-12-09 19:25:14,616 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:25:15,222 WARN L180 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2018-12-09 19:25:15,486 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-12-09 19:25:15,814 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-12-09 19:25:16,041 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-12-09 19:25:16,645 WARN L180 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-12-09 19:25:17,106 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-12-09 19:25:17,691 WARN L180 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-12-09 19:25:18,006 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-12-09 19:25:18,311 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-12-09 19:25:18,733 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:25:19,387 WARN L180 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-12-09 19:25:19,694 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-12-09 19:25:20,032 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-12-09 19:25:20,375 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:25:20,773 WARN L180 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2018-12-09 19:25:21,228 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-12-09 19:25:21,577 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-12-09 19:25:21,968 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-12-09 19:25:22,319 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:25:22,690 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:25:23,231 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-12-09 19:25:23,644 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:25:24,814 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-12-09 19:25:25,278 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:25:25,573 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:25:26,109 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:25:26,651 WARN L180 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-12-09 19:25:27,041 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:25:27,410 WARN L180 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2018-12-09 19:25:27,840 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-12-09 19:25:28,201 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:25:28,995 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-12-09 19:25:29,366 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:25:30,496 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-12-09 19:25:30,931 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:25:31,251 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:25:31,919 WARN L180 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:25:32,880 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2018-12-09 19:25:33,353 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-12-09 19:25:34,009 WARN L180 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-12-09 19:25:34,460 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2018-12-09 19:25:34,978 WARN L180 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2018-12-09 19:25:35,552 WARN L180 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2018-12-09 19:25:36,601 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2018-12-09 19:25:37,254 WARN L180 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2018-12-09 19:25:38,240 WARN L180 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2018-12-09 19:25:38,983 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2018-12-09 19:25:39,432 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-12-09 19:25:40,243 WARN L180 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-12-09 19:25:41,313 WARN L180 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-12-09 19:25:41,875 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2018-12-09 19:25:42,593 WARN L180 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-12-09 19:25:51,302 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-12-09 19:25:51,611 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-12-09 19:25:53,057 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:25:53,395 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-12-09 19:25:53,798 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:25:54,197 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-12-09 19:25:54,685 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-12-09 19:25:55,085 WARN L180 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-12-09 19:25:56,232 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:25:56,547 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-12-09 19:25:57,718 WARN L180 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-12-09 19:25:58,354 WARN L180 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2018-12-09 19:25:59,278 WARN L180 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2018-12-09 19:26:00,018 WARN L180 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2018-12-09 19:26:00,974 WARN L180 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2018-12-09 19:26:01,661 WARN L180 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2018-12-09 19:26:02,343 WARN L180 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-12-09 19:26:02,997 WARN L180 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2018-12-09 19:26:03,961 WARN L180 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:26:05,201 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-12-09 19:26:05,953 WARN L180 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-12-09 19:26:06,257 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-12-09 19:26:07,636 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-12-09 19:26:08,100 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-12-09 19:26:08,451 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:26:08,785 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:26:09,168 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-12-09 19:26:09,592 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-12-09 19:26:10,325 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-12-09 19:26:10,932 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:26:11,731 WARN L180 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2018-12-09 19:26:12,504 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2018-12-09 19:26:13,234 WARN L180 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-12-09 19:26:13,912 WARN L180 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2018-12-09 19:26:14,572 WARN L180 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-12-09 19:26:16,988 WARN L180 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-12-09 19:26:17,791 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-12-09 19:26:18,564 WARN L180 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-12-09 19:26:19,771 WARN L180 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2018-12-09 19:26:20,344 WARN L180 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2018-12-09 19:26:20,988 WARN L180 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2018-12-09 19:26:21,486 WARN L180 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-12-09 19:26:22,091 WARN L180 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2018-12-09 19:26:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:26:22,107 INFO L93 Difference]: Finished difference Result 50692 states and 128207 transitions. [2018-12-09 19:26:22,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-12-09 19:26:22,108 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 141 [2018-12-09 19:26:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:26:22,148 INFO L225 Difference]: With dead ends: 50692 [2018-12-09 19:26:22,148 INFO L226 Difference]: Without dead ends: 48967 [2018-12-09 19:26:22,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 631 SyntacticMatches, 9 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30485 ImplicationChecksByTransitivity, 74.4s TimeCoverageRelationStatistics Valid=7404, Invalid=69048, Unknown=0, NotChecked=0, Total=76452 [2018-12-09 19:26:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48967 states. [2018-12-09 19:26:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48967 to 18943. [2018-12-09 19:26:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18943 states. [2018-12-09 19:26:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18943 states to 18943 states and 48645 transitions. [2018-12-09 19:26:22,477 INFO L78 Accepts]: Start accepts. Automaton has 18943 states and 48645 transitions. Word has length 141 [2018-12-09 19:26:22,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:26:22,478 INFO L480 AbstractCegarLoop]: Abstraction has 18943 states and 48645 transitions. [2018-12-09 19:26:22,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-09 19:26:22,478 INFO L276 IsEmpty]: Start isEmpty. Operand 18943 states and 48645 transitions. [2018-12-09 19:26:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-12-09 19:26:22,488 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:26:22,488 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:26:22,488 INFO L423 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:26:22,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:26:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash 154870969, now seen corresponding path program 1 times [2018-12-09 19:26:22,489 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:26:22,489 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/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 [2018-12-09 19:26:22,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:26:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:26:22,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:26:22,604 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:26:22,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:26:22,701 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:26:22,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:26:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:26:22,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:26:22,756 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:26:22,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:26:22,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2018-12-09 19:26:22,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 19:26:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 19:26:22,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-12-09 19:26:22,793 INFO L87 Difference]: Start difference. First operand 18943 states and 48645 transitions. Second operand 18 states. [2018-12-09 19:26:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:26:23,356 INFO L93 Difference]: Finished difference Result 29932 states and 76033 transitions. [2018-12-09 19:26:23,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 19:26:23,356 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2018-12-09 19:26:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:26:23,379 INFO L225 Difference]: With dead ends: 29932 [2018-12-09 19:26:23,379 INFO L226 Difference]: Without dead ends: 29932 [2018-12-09 19:26:23,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2018-12-09 19:26:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29932 states. [2018-12-09 19:26:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29932 to 21037. [2018-12-09 19:26:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21037 states. [2018-12-09 19:26:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21037 states to 21037 states and 54259 transitions. [2018-12-09 19:26:23,625 INFO L78 Accepts]: Start accepts. Automaton has 21037 states and 54259 transitions. Word has length 164 [2018-12-09 19:26:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:26:23,626 INFO L480 AbstractCegarLoop]: Abstraction has 21037 states and 54259 transitions. [2018-12-09 19:26:23,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 19:26:23,626 INFO L276 IsEmpty]: Start isEmpty. Operand 21037 states and 54259 transitions. [2018-12-09 19:26:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-12-09 19:26:23,640 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:26:23,640 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:26:23,640 INFO L423 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:26:23,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:26:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash -140724652, now seen corresponding path program 2 times [2018-12-09 19:26:23,641 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:26:23,641 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:26:23,657 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 19:26:23,865 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:26:23,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:23,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:26:23,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:26:24,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:26:24,336 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:26:24,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 19:26:24,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:26:24,391 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:24,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:26:24,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:26:24,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:26:24,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13] total 24 [2018-12-09 19:26:24,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 19:26:24,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 19:26:24,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2018-12-09 19:26:24,490 INFO L87 Difference]: Start difference. First operand 21037 states and 54259 transitions. Second operand 24 states. [2018-12-09 19:26:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:26:24,839 INFO L93 Difference]: Finished difference Result 35587 states and 90653 transitions. [2018-12-09 19:26:24,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-09 19:26:24,839 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 192 [2018-12-09 19:26:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:26:24,861 INFO L225 Difference]: With dead ends: 35587 [2018-12-09 19:26:24,861 INFO L226 Difference]: Without dead ends: 25381 [2018-12-09 19:26:24,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 19:26:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25381 states. [2018-12-09 19:26:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25381 to 20188. [2018-12-09 19:26:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20188 states. [2018-12-09 19:26:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20188 states to 20188 states and 50789 transitions. [2018-12-09 19:26:25,069 INFO L78 Accepts]: Start accepts. Automaton has 20188 states and 50789 transitions. Word has length 192 [2018-12-09 19:26:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:26:25,069 INFO L480 AbstractCegarLoop]: Abstraction has 20188 states and 50789 transitions. [2018-12-09 19:26:25,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 19:26:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20188 states and 50789 transitions. [2018-12-09 19:26:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-12-09 19:26:25,080 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:26:25,080 INFO L402 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, 1, 1, 1, 1] [2018-12-09 19:26:25,080 INFO L423 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:26:25,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:26:25,080 INFO L82 PathProgramCache]: Analyzing trace with hash 682963135, now seen corresponding path program 2 times [2018-12-09 19:26:25,081 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:26:25,081 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:26:25,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 19:26:25,244 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:26:25,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:25,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:25,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:25,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:26:25,440 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:26:25,447 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 19:26:25,495 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:26:25,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:25,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:25,522 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:25,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:26:25,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2018-12-09 19:26:25,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 19:26:25,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 19:26:25,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-12-09 19:26:25,566 INFO L87 Difference]: Start difference. First operand 20188 states and 50789 transitions. Second operand 18 states. [2018-12-09 19:26:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:26:26,177 INFO L93 Difference]: Finished difference Result 40360 states and 101108 transitions. [2018-12-09 19:26:26,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-12-09 19:26:26,178 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 193 [2018-12-09 19:26:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:26:26,207 INFO L225 Difference]: With dead ends: 40360 [2018-12-09 19:26:26,208 INFO L226 Difference]: Without dead ends: 39136 [2018-12-09 19:26:26,208 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=2073, Unknown=0, NotChecked=0, Total=2550 [2018-12-09 19:26:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39136 states. [2018-12-09 19:26:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39136 to 21688. [2018-12-09 19:26:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21688 states. [2018-12-09 19:26:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21688 states to 21688 states and 54491 transitions. [2018-12-09 19:26:26,490 INFO L78 Accepts]: Start accepts. Automaton has 21688 states and 54491 transitions. Word has length 193 [2018-12-09 19:26:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:26:26,490 INFO L480 AbstractCegarLoop]: Abstraction has 21688 states and 54491 transitions. [2018-12-09 19:26:26,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 19:26:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 21688 states and 54491 transitions. [2018-12-09 19:26:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-12-09 19:26:26,501 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:26:26,501 INFO L402 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, 1, 1, 1, 1] [2018-12-09 19:26:26,501 INFO L423 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:26:26,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:26:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1208340247, now seen corresponding path program 3 times [2018-12-09 19:26:26,502 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:26:26,502 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:26:26,521 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 19:26:26,745 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-09 19:26:26,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:26,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:26,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:26,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:26:26,929 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:26:26,936 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 19:26:27,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-09 19:26:27,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:27,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:27,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 19:26:27,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:26:27,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2018-12-09 19:26:27,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 19:26:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 19:26:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-12-09 19:26:27,290 INFO L87 Difference]: Start difference. First operand 21688 states and 54491 transitions. Second operand 18 states. [2018-12-09 19:26:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:26:29,266 INFO L93 Difference]: Finished difference Result 41992 states and 105006 transitions. [2018-12-09 19:26:29,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-09 19:26:29,266 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 193 [2018-12-09 19:26:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:26:29,292 INFO L225 Difference]: With dead ends: 41992 [2018-12-09 19:26:29,293 INFO L226 Difference]: Without dead ends: 41116 [2018-12-09 19:26:29,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 750 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=451, Invalid=1901, Unknown=0, NotChecked=0, Total=2352 [2018-12-09 19:26:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41116 states. [2018-12-09 19:26:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41116 to 21025. [2018-12-09 19:26:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21025 states. [2018-12-09 19:26:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21025 states to 21025 states and 52655 transitions. [2018-12-09 19:26:29,543 INFO L78 Accepts]: Start accepts. Automaton has 21025 states and 52655 transitions. Word has length 193 [2018-12-09 19:26:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:26:29,544 INFO L480 AbstractCegarLoop]: Abstraction has 21025 states and 52655 transitions. [2018-12-09 19:26:29,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 19:26:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 21025 states and 52655 transitions. [2018-12-09 19:26:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-12-09 19:26:29,554 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:26:29,555 INFO L402 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, 1, 1, 1, 1] [2018-12-09 19:26:29,555 INFO L423 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:26:29,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:26:29,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1760452637, now seen corresponding path program 2 times [2018-12-09 19:26:29,555 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:26:29,555 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:26:29,573 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 19:26:29,792 ERROR L235 seRefinementStrategy]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2018-12-09 19:26:29,792 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 19:26:29,792 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 19:26:29,800 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 19:26:29,881 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:26:29,882 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:26:29,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:26:30,023 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:26:30,025 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:26:30,025 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,027 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,037 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,037 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:26:30,248 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:26:30,251 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:26:30,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:26:30,255 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,263 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,274 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,274 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:26:30,494 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:26:30,497 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:26:30,498 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:26:30,499 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,507 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,518 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:30,518 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:26:31,108 INFO L478 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 15 treesize of output 11 [2018-12-09 19:26:31,109 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:26:31,109 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:26:31,111 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:31,113 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:31,113 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:26:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:26:31,360 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:26:35,309 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:26:35,311 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:26:35,311 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:26:35,313 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:35,316 INFO L478 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 26 treesize of output 24 [2018-12-09 19:26:35,319 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:26:35,319 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:26:35,323 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:26:35,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:26:35,342 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:26:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:26:36,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 19:26:36,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34] total 68 [2018-12-09 19:26:36,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-12-09 19:26:36,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-12-09 19:26:36,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=4339, Unknown=0, NotChecked=0, Total=4556 [2018-12-09 19:26:36,242 INFO L87 Difference]: Start difference. First operand 21025 states and 52655 transitions. Second operand 68 states. [2018-12-09 19:26:42,695 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-12-09 19:26:44,199 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-12-09 19:26:44,897 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:26:46,252 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-12-09 19:26:47,116 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-12-09 19:26:47,561 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-12-09 19:26:49,371 WARN L180 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:26:49,763 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-12-09 19:26:51,236 WARN L180 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-12-09 19:26:51,602 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-12-09 19:26:52,331 WARN L180 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-12-09 19:26:52,718 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2018-12-09 19:26:53,416 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-12-09 19:26:53,958 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-12-09 19:26:54,624 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-12-09 19:26:55,199 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:26:56,048 WARN L180 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2018-12-09 19:26:56,466 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-12-09 19:26:56,973 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 19:26:57,576 WARN L180 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2018-12-09 19:26:57,962 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2018-12-09 19:26:58,415 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-12-09 19:26:59,031 WARN L180 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2018-12-09 19:26:59,463 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-12-09 19:27:00,358 WARN L180 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2018-12-09 19:27:01,101 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2018-12-09 19:27:01,713 WARN L180 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2018-12-09 19:27:02,305 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2018-12-09 19:27:02,944 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:27:03,336 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-12-09 19:27:03,934 WARN L180 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-12-09 19:27:04,162 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-12-09 19:27:04,656 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-12-09 19:27:05,536 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-12-09 19:27:05,977 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-12-09 19:27:06,439 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-12-09 19:27:07,716 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-12-09 19:27:08,363 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:27:08,901 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-12-09 19:27:09,326 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-12-09 19:27:09,723 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-12-09 19:27:10,152 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:27:11,521 WARN L180 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2018-12-09 19:27:11,911 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-12-09 19:27:12,179 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-12-09 19:27:12,525 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-12-09 19:27:13,235 WARN L180 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-12-09 19:27:13,695 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2018-12-09 19:27:14,042 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-12-09 19:27:14,417 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-12-09 19:27:14,966 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-12-09 19:27:15,629 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2018-12-09 19:27:16,196 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-12-09 19:27:16,816 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2018-12-09 19:27:17,199 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-12-09 19:27:17,751 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-12-09 19:27:18,687 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-12-09 19:27:19,313 WARN L180 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2018-12-09 19:27:19,845 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-12-09 19:27:20,220 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-12-09 19:27:20,876 WARN L180 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2018-12-09 19:27:29,455 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-12-09 19:27:30,094 WARN L180 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-12-09 19:27:30,651 WARN L180 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2018-12-09 19:27:31,304 WARN L180 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2018-12-09 19:27:31,779 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-12-09 19:27:32,673 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-12-09 19:27:33,131 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-12-09 19:27:33,672 WARN L180 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2018-12-09 19:27:34,511 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2018-12-09 19:27:35,273 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-12-09 19:27:36,129 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:27:36,605 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-12-09 19:27:37,191 WARN L180 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-12-09 19:27:37,631 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-12-09 19:27:38,294 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-12-09 19:27:38,999 WARN L180 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2018-12-09 19:27:39,688 WARN L180 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2018-12-09 19:27:40,109 WARN L180 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:27:40,666 WARN L180 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2018-12-09 19:27:41,206 WARN L180 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-12-09 19:27:42,584 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-12-09 19:27:42,952 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:27:43,528 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2018-12-09 19:27:45,239 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:27:45,827 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-12-09 19:27:46,370 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2018-12-09 19:27:46,939 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-12-09 19:27:47,440 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-12-09 19:27:48,001 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-12-09 19:27:48,546 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-12-09 19:27:49,089 WARN L180 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-12-09 19:27:49,810 WARN L180 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2018-12-09 19:27:50,616 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-12-09 19:27:51,733 WARN L180 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2018-12-09 19:27:52,570 WARN L180 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2018-12-09 19:27:53,048 WARN L180 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2018-12-09 19:27:53,617 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2018-12-09 19:27:54,192 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2018-12-09 19:27:56,866 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:27:58,436 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2018-12-09 19:27:58,926 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-12-09 19:27:59,502 WARN L180 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2018-12-09 19:28:00,100 WARN L180 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-12-09 19:28:00,378 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:28:00,732 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-12-09 19:28:01,662 WARN L180 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2018-12-09 19:28:02,550 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2018-12-09 19:28:03,215 WARN L180 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-12-09 19:28:03,722 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-12-09 19:28:05,460 WARN L180 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2018-12-09 19:28:06,103 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-12-09 19:28:06,561 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2018-12-09 19:28:06,876 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-12-09 19:28:07,233 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:28:07,774 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2018-12-09 19:28:08,214 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-12-09 19:28:09,249 WARN L180 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2018-12-09 19:28:09,780 WARN L180 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2018-12-09 19:28:10,402 WARN L180 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-12-09 19:28:10,990 WARN L180 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-12-09 19:28:11,307 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-12-09 19:28:11,783 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:28:12,303 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2018-12-09 19:28:12,802 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-12-09 19:28:13,437 WARN L180 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2018-12-09 19:28:13,922 WARN L180 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2018-12-09 19:28:14,669 WARN L180 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2018-12-09 19:28:15,074 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-12-09 19:28:15,553 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-12-09 19:28:15,860 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-12-09 19:28:16,328 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:28:16,964 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-12-09 19:28:17,449 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-12-09 19:28:17,730 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:28:18,055 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:28:18,497 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2018-12-09 19:28:18,919 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2018-12-09 19:28:19,507 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2018-12-09 19:28:19,820 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:28:20,218 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:28:20,882 WARN L180 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2018-12-09 19:28:21,338 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2018-12-09 19:28:21,999 WARN L180 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2018-12-09 19:28:22,708 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:28:23,215 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-12-09 19:28:23,665 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2018-12-09 19:28:24,163 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2018-12-09 19:28:24,392 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-12-09 19:28:24,840 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-12-09 19:28:25,850 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-12-09 19:28:26,291 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-12-09 19:28:27,513 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:28:28,402 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-12-09 19:28:28,811 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-12-09 19:28:29,401 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-12-09 19:28:29,808 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-12-09 19:28:30,388 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-12-09 19:28:30,802 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-12-09 19:28:31,391 WARN L180 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-12-09 19:28:32,148 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-12-09 19:28:33,547 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:28:33,965 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-12-09 19:28:34,476 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-12-09 19:28:34,930 WARN L180 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-12-09 19:28:35,560 WARN L180 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2018-12-09 19:28:37,312 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-12-09 19:28:37,853 WARN L180 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2018-12-09 19:28:38,353 WARN L180 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 81 [2018-12-09 19:28:39,025 WARN L180 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2018-12-09 19:28:40,051 WARN L180 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2018-12-09 19:28:40,368 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:28:41,236 WARN L180 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 82 [2018-12-09 19:28:41,744 WARN L180 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2018-12-09 19:28:42,512 WARN L180 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2018-12-09 19:28:43,665 WARN L180 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2018-12-09 19:28:44,030 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:28:44,750 WARN L180 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2018-12-09 19:28:45,193 WARN L180 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2018-12-09 19:28:45,741 WARN L180 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2018-12-09 19:28:47,240 WARN L180 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2018-12-09 19:28:47,620 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:28:48,419 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-12-09 19:28:49,185 WARN L180 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 95 [2018-12-09 19:28:49,856 WARN L180 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2018-12-09 19:28:50,746 WARN L180 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2018-12-09 19:28:51,944 WARN L180 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2018-12-09 19:28:52,351 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:28:58,876 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-12-09 19:28:59,235 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-12-09 19:29:09,575 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-12-09 19:29:10,542 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-12-09 19:29:10,965 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-12-09 19:29:11,316 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:29:12,775 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-12-09 19:29:13,203 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:29:13,786 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:29:14,401 WARN L180 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:29:14,896 WARN L180 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-12-09 19:29:15,192 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-12-09 19:29:15,659 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-12-09 19:29:16,180 WARN L180 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2018-12-09 19:29:16,537 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:29:17,285 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:29:17,789 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:29:19,304 WARN L180 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-12-09 19:29:20,036 WARN L180 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-12-09 19:29:21,008 WARN L180 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2018-12-09 19:29:22,167 WARN L180 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2018-12-09 19:29:23,644 WARN L180 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-12-09 19:29:25,616 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-12-09 19:29:26,255 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:29:27,393 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-12-09 19:29:28,018 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-12-09 19:29:31,028 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:29:31,424 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-12-09 19:29:33,086 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:29:33,530 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-12-09 19:29:35,799 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-12-09 19:29:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:38,461 INFO L93 Difference]: Finished difference Result 41455 states and 103217 transitions. [2018-12-09 19:29:38,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2018-12-09 19:29:38,462 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 197 [2018-12-09 19:29:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:38,474 INFO L225 Difference]: With dead ends: 41455 [2018-12-09 19:29:38,474 INFO L226 Difference]: Without dead ends: 19969 [2018-12-09 19:29:38,477 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 503 SyntacticMatches, 9 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54410 ImplicationChecksByTransitivity, 121.4s TimeCoverageRelationStatistics Valid=10299, Invalid=125493, Unknown=0, NotChecked=0, Total=135792 [2018-12-09 19:29:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19969 states. [2018-12-09 19:29:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19969 to 13588. [2018-12-09 19:29:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13588 states. [2018-12-09 19:29:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 34033 transitions. [2018-12-09 19:29:38,602 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 34033 transitions. Word has length 197 [2018-12-09 19:29:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:38,602 INFO L480 AbstractCegarLoop]: Abstraction has 13588 states and 34033 transitions. [2018-12-09 19:29:38,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-12-09 19:29:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 34033 transitions. [2018-12-09 19:29:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-12-09 19:29:38,608 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:38,608 INFO L402 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, 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, 1] [2018-12-09 19:29:38,609 INFO L423 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:29:38,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:38,609 INFO L82 PathProgramCache]: Analyzing trace with hash -7436925, now seen corresponding path program 1 times [2018-12-09 19:29:38,609 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:29:38,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:29:38,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 19:29:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:38,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:29:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 235 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:29:38,802 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:29:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 235 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:29:38,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:29:38,974 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:29:38,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:39,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:29:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 235 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:29:39,079 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:29:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 235 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:29:39,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:29:39,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13] total 24 [2018-12-09 19:29:39,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 19:29:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 19:29:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2018-12-09 19:29:39,132 INFO L87 Difference]: Start difference. First operand 13588 states and 34033 transitions. Second operand 24 states. [2018-12-09 19:29:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:40,085 INFO L93 Difference]: Finished difference Result 24889 states and 61969 transitions. [2018-12-09 19:29:40,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-09 19:29:40,085 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 220 [2018-12-09 19:29:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:40,102 INFO L225 Difference]: With dead ends: 24889 [2018-12-09 19:29:40,102 INFO L226 Difference]: Without dead ends: 24349 [2018-12-09 19:29:40,102 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 852 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=786, Invalid=3374, Unknown=0, NotChecked=0, Total=4160 [2018-12-09 19:29:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24349 states. [2018-12-09 19:29:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24349 to 15217. [2018-12-09 19:29:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15217 states. [2018-12-09 19:29:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15217 states to 15217 states and 37877 transitions. [2018-12-09 19:29:40,276 INFO L78 Accepts]: Start accepts. Automaton has 15217 states and 37877 transitions. Word has length 220 [2018-12-09 19:29:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:40,276 INFO L480 AbstractCegarLoop]: Abstraction has 15217 states and 37877 transitions. [2018-12-09 19:29:40,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 19:29:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 15217 states and 37877 transitions. [2018-12-09 19:29:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-12-09 19:29:40,286 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:40,286 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:40,286 INFO L423 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:29:40,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:40,286 INFO L82 PathProgramCache]: Analyzing trace with hash -176208519, now seen corresponding path program 3 times [2018-12-09 19:29:40,287 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:29:40,287 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:29:40,304 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 19:29:40,616 ERROR L235 seRefinementStrategy]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2018-12-09 19:29:40,616 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 19:29:40,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 19:29:40,624 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 19:29:40,880 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 19:29:40,881 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:29:40,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:29:41,021 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:29:41,023 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:29:41,023 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,026 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,036 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,036 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:29:41,224 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:29:41,227 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:29:41,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:29:41,229 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,237 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,248 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,248 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:29:41,470 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:29:41,474 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:29:41,475 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:29:41,476 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,483 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,494 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,495 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:29:41,774 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:29:41,778 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:29:41,780 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:29:41,780 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,792 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,805 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:41,805 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:29:42,610 INFO L478 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 15 treesize of output 11 [2018-12-09 19:29:42,612 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:29:42,612 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:42,613 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:42,615 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:42,615 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:29:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:42,952 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:29:49,350 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:29:49,352 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:29:49,352 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:49,354 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:49,358 INFO L478 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 26 treesize of output 24 [2018-12-09 19:29:49,363 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:29:49,364 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:49,368 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:49,394 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:29:49,394 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:29:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 18 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:50,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 19:29:50,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41] total 82 [2018-12-09 19:29:50,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-12-09 19:29:50,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-12-09 19:29:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6374, Unknown=0, NotChecked=0, Total=6642 [2018-12-09 19:29:50,448 INFO L87 Difference]: Start difference. First operand 15217 states and 37877 transitions. Second operand 82 states. [2018-12-09 19:29:56,559 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-12-09 19:29:59,829 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-12-09 19:30:00,611 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:30:02,157 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-12-09 19:30:03,109 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-12-09 19:30:03,625 WARN L180 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-12-09 19:30:04,855 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-12-09 19:30:05,667 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:30:06,083 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-12-09 19:30:07,870 WARN L180 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-12-09 19:30:08,280 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2018-12-09 19:30:09,288 WARN L180 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-12-09 19:30:09,692 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2018-12-09 19:30:10,513 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-12-09 19:30:11,164 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-12-09 19:30:11,893 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-12-09 19:30:12,519 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2018-12-09 19:30:13,442 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-12-09 19:30:13,883 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-12-09 19:30:14,481 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 19:30:15,170 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-12-09 19:30:15,654 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-12-09 19:30:16,194 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-12-09 19:30:16,904 WARN L180 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-12-09 19:30:17,454 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-12-09 19:30:17,931 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2018-12-09 19:30:18,471 WARN L180 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2018-12-09 19:30:19,321 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2018-12-09 19:30:20,089 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-12-09 19:30:20,882 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2018-12-09 19:30:21,498 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:30:22,517 WARN L180 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-12-09 19:30:23,826 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-12-09 19:30:24,452 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-12-09 19:30:25,191 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2018-12-09 19:30:25,666 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-12-09 19:30:26,135 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-12-09 19:30:27,664 WARN L180 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 88 [2018-12-09 19:30:28,175 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-12-09 19:30:28,482 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-12-09 19:30:28,900 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-12-09 19:30:29,584 WARN L180 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2018-12-09 19:30:30,019 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2018-12-09 19:30:30,478 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-12-09 19:30:30,898 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-12-09 19:30:31,317 WARN L180 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-12-09 19:30:32,061 WARN L180 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2018-12-09 19:30:32,720 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-12-09 19:30:33,388 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-12-09 19:30:33,837 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-12-09 19:30:34,487 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:30:35,556 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-12-09 19:30:36,055 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2018-12-09 19:30:36,596 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-12-09 19:30:36,993 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-12-09 19:30:37,765 WARN L180 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2018-12-09 19:30:38,279 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2018-12-09 19:30:39,039 WARN L180 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-12-09 19:30:39,686 WARN L180 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-12-09 19:30:40,519 WARN L180 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2018-12-09 19:30:41,052 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-12-09 19:30:41,791 WARN L180 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-12-09 19:30:42,314 WARN L180 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-12-09 19:30:42,932 WARN L180 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2018-12-09 19:30:44,114 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-12-09 19:30:45,007 WARN L180 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-12-09 19:30:45,826 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-12-09 19:30:46,227 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-12-09 19:30:46,712 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-12-09 19:30:47,229 WARN L180 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-12-09 19:30:48,527 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2018-12-09 19:30:50,673 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-12-09 19:30:51,141 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-12-09 19:30:51,751 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-12-09 19:30:52,355 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-12-09 19:30:53,046 WARN L180 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 84 [2018-12-09 19:30:53,590 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2018-12-09 19:30:54,216 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-12-09 19:30:54,832 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-12-09 19:30:55,460 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2018-12-09 19:30:57,189 WARN L180 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2018-12-09 19:30:57,699 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2018-12-09 19:30:58,219 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2018-12-09 19:30:58,852 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-12-09 19:30:59,504 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2018-12-09 19:31:00,205 WARN L180 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2018-12-09 19:31:00,742 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2018-12-09 19:31:01,367 WARN L180 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2018-12-09 19:31:01,955 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2018-12-09 19:31:02,598 WARN L180 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2018-12-09 19:31:03,075 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2018-12-09 19:31:03,884 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2018-12-09 19:31:04,985 WARN L180 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2018-12-09 19:31:05,734 WARN L180 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2018-12-09 19:31:06,529 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2018-12-09 19:31:07,324 WARN L180 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-12-09 19:31:07,864 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2018-12-09 19:31:08,573 WARN L180 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2018-12-09 19:31:09,965 WARN L180 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2018-12-09 19:31:10,750 WARN L180 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2018-12-09 19:31:11,629 WARN L180 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2018-12-09 19:31:12,289 WARN L180 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2018-12-09 19:31:12,938 WARN L180 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2018-12-09 19:31:13,727 WARN L180 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-12-09 19:31:28,505 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-12-09 19:31:29,266 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2018-12-09 19:31:29,824 WARN L180 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2018-12-09 19:31:30,491 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2018-12-09 19:31:31,347 WARN L180 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 92 [2018-12-09 19:31:32,090 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-12-09 19:31:33,507 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-12-09 19:31:33,971 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2018-12-09 19:31:34,496 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2018-12-09 19:31:35,148 WARN L180 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-12-09 19:31:36,267 WARN L180 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2018-12-09 19:31:37,175 WARN L180 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2018-12-09 19:31:38,293 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:31:38,761 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-12-09 19:31:39,266 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-12-09 19:31:39,783 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2018-12-09 19:31:40,807 WARN L180 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2018-12-09 19:31:41,549 WARN L180 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2018-12-09 19:31:42,881 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2018-12-09 19:31:43,425 WARN L180 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-12-09 19:31:44,262 WARN L180 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2018-12-09 19:31:47,084 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-12-09 19:31:47,551 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-12-09 19:31:48,215 WARN L180 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-12-09 19:31:48,891 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2018-12-09 19:31:49,564 WARN L180 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2018-12-09 19:31:50,202 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-12-09 19:31:50,720 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-12-09 19:31:51,341 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2018-12-09 19:31:51,972 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2018-12-09 19:31:52,850 WARN L180 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2018-12-09 19:31:54,039 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-12-09 19:31:54,685 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-12-09 19:31:55,789 WARN L180 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-12-09 19:31:56,367 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2018-12-09 19:31:56,864 WARN L180 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2018-12-09 19:31:57,567 WARN L180 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2018-12-09 19:31:58,254 WARN L180 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2018-12-09 19:32:01,764 WARN L180 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2018-12-09 19:32:02,396 WARN L180 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-12-09 19:32:02,919 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2018-12-09 19:32:03,650 WARN L180 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2018-12-09 19:32:04,411 WARN L180 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2018-12-09 19:32:04,904 WARN L180 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-12-09 19:32:05,335 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-12-09 19:32:06,495 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2018-12-09 19:32:07,039 WARN L180 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2018-12-09 19:32:07,880 WARN L180 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2018-12-09 19:32:08,638 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:32:09,588 WARN L180 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2018-12-09 19:32:10,107 WARN L180 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2018-12-09 19:32:10,725 WARN L180 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2018-12-09 19:32:11,351 WARN L180 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-12-09 19:32:11,861 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-12-09 19:32:12,865 WARN L180 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-12-09 19:32:13,419 WARN L180 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-12-09 19:32:14,184 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2018-12-09 19:32:14,795 WARN L180 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 86 [2018-12-09 19:32:15,632 WARN L180 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 91 [2018-12-09 19:32:16,436 WARN L180 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 91 [2018-12-09 19:32:17,026 WARN L180 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-12-09 19:32:17,605 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2018-12-09 19:32:18,237 WARN L180 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2018-12-09 19:32:18,737 WARN L180 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2018-12-09 19:32:19,653 WARN L180 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 89 [2018-12-09 19:32:20,135 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2018-12-09 19:32:20,719 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2018-12-09 19:32:21,740 WARN L180 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2018-12-09 19:32:22,260 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2018-12-09 19:32:22,809 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 86 [2018-12-09 19:32:23,332 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:32:23,920 WARN L180 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2018-12-09 19:32:24,762 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-12-09 19:32:25,376 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-12-09 19:32:26,735 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-12-09 19:32:27,614 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2018-12-09 19:32:28,442 WARN L180 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-12-09 19:32:29,524 WARN L180 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 86 [2018-12-09 19:32:30,177 WARN L180 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 89 [2018-12-09 19:32:31,012 WARN L180 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 94 [2018-12-09 19:32:31,439 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-12-09 19:32:32,062 WARN L180 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2018-12-09 19:32:32,636 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 84 [2018-12-09 19:32:33,271 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 85 [2018-12-09 19:32:33,938 WARN L180 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 90 [2018-12-09 19:32:34,558 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2018-12-09 19:32:35,142 WARN L180 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2018-12-09 19:32:36,223 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-12-09 19:32:37,286 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-12-09 19:32:38,001 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2018-12-09 19:32:38,395 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-12-09 19:32:39,837 WARN L180 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2018-12-09 19:32:42,110 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-12-09 19:32:42,392 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-12-09 19:32:42,858 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-12-09 19:32:43,201 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:32:43,584 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:32:44,039 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:32:44,916 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:32:45,409 WARN L180 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-12-09 19:32:45,789 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:32:46,298 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-12-09 19:32:46,860 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-12-09 19:32:47,214 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:32:47,763 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-12-09 19:32:48,255 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-12-09 19:32:48,751 WARN L180 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-12-09 19:32:50,072 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:32:50,607 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-12-09 19:32:51,089 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-12-09 19:32:52,259 WARN L180 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2018-12-09 19:32:53,054 WARN L180 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-12-09 19:32:53,785 WARN L180 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2018-12-09 19:32:54,105 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-12-09 19:32:54,635 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-12-09 19:32:55,404 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-12-09 19:32:56,149 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-12-09 19:32:56,443 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:32:57,776 WARN L180 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-12-09 19:32:59,166 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:32:59,619 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-12-09 19:33:00,000 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-12-09 19:33:00,771 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:33:01,212 WARN L180 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:33:01,685 WARN L180 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2018-12-09 19:33:02,347 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-12-09 19:33:02,767 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-12-09 19:33:03,173 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:33:06,755 WARN L180 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2018-12-09 19:33:07,480 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2018-12-09 19:33:07,951 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-12-09 19:33:08,535 WARN L180 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-12-09 19:33:09,078 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2018-12-09 19:33:09,519 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:33:10,387 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-12-09 19:33:10,788 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-12-09 19:33:11,568 WARN L180 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2018-12-09 19:33:12,006 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-12-09 19:33:13,247 WARN L180 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2018-12-09 19:33:13,915 WARN L180 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-12-09 19:33:20,474 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2018-12-09 19:33:20,797 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-12-09 19:33:21,321 WARN L180 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-12-09 19:33:21,536 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-12-09 19:33:22,171 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-12-09 19:33:22,894 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-12-09 19:33:23,759 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:33:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:33:25,563 INFO L93 Difference]: Finished difference Result 23155 states and 57347 transitions. [2018-12-09 19:33:25,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2018-12-09 19:33:25,564 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 253 [2018-12-09 19:33:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:33:25,569 INFO L225 Difference]: With dead ends: 23155 [2018-12-09 19:33:25,569 INFO L226 Difference]: Without dead ends: 7690 [2018-12-09 19:33:25,572 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 569 SyntacticMatches, 7 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58605 ImplicationChecksByTransitivity, 143.3s TimeCoverageRelationStatistics Valid=9986, Invalid=145644, Unknown=0, NotChecked=0, Total=155630 [2018-12-09 19:33:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2018-12-09 19:33:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7402. [2018-12-09 19:33:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2018-12-09 19:33:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 18379 transitions. [2018-12-09 19:33:25,623 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 18379 transitions. Word has length 253 [2018-12-09 19:33:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:33:25,624 INFO L480 AbstractCegarLoop]: Abstraction has 7402 states and 18379 transitions. [2018-12-09 19:33:25,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-12-09 19:33:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 18379 transitions. [2018-12-09 19:33:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-12-09 19:33:25,629 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:33:25,629 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2018-12-09 19:33:25,629 INFO L423 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:33:25,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:33:25,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1264137373, now seen corresponding path program 4 times [2018-12-09 19:33:25,630 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:33:25,630 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:33:25,650 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 19:33:26,050 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 19:33:26,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:33:26,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:33:26,241 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:33:26,244 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:33:26,244 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,246 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,256 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,256 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:33:26,574 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:26,580 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:26,584 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:26,584 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,595 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,613 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,613 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:26,873 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:26,878 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:26,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:26,881 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,891 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,905 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:26,905 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:27,214 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:27,218 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:27,221 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:27,221 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:27,230 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:27,244 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:27,244 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:27,611 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:27,614 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:27,616 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:27,616 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:27,625 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:27,636 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:27,636 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:28,672 INFO L478 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 15 treesize of output 11 [2018-12-09 19:33:28,675 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:33:28,675 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:28,676 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:28,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:28,678 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:33:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:33:29,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:33:38,221 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:33:38,223 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:33:38,224 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:38,225 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:38,229 INFO L478 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 26 treesize of output 24 [2018-12-09 19:33:38,232 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:33:38,233 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:38,236 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:38,259 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:33:38,259 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:33:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 24 proven. 504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:33:39,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:33:39,523 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:33:39,531 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 19:33:39,585 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 19:33:39,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:33:39,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:33:39,598 INFO L478 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 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 19:33:39,600 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2018-12-09 19:33:39,600 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,602 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,612 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,612 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 19:33:39,620 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:39,624 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:39,627 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:39,627 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,639 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,655 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,655 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:39,664 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:39,668 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:39,671 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:39,671 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,679 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,689 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,690 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:39,697 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:39,701 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:39,703 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:39,704 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,711 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,722 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,723 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:39,729 INFO L478 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 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 19:33:39,733 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 19:33:39,735 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-09 19:33:39,735 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,743 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,755 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,755 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 19:33:39,792 INFO L478 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 15 treesize of output 11 [2018-12-09 19:33:39,794 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-12-09 19:33:39,794 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,795 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,797 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:39,797 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 19:33:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:33:40,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:33:40,665 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 19:33:40,667 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:33:40,668 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:40,669 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:40,673 INFO L478 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 26 treesize of output 24 [2018-12-09 19:33:40,677 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 1 [2018-12-09 19:33:40,677 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 19:33:40,680 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:33:40,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 19:33:40,700 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2018-12-09 19:33:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 24 proven. 504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:33:41,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:33:41,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 48, 50, 48] total 96 [2018-12-09 19:33:41,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-12-09 19:33:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-12-09 19:33:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=8801, Unknown=0, NotChecked=0, Total=9120 [2018-12-09 19:33:41,015 INFO L87 Difference]: Start difference. First operand 7402 states and 18379 transitions. Second operand 96 states. [2018-12-09 19:33:48,206 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-12-09 19:33:48,681 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-12-09 19:33:49,408 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-12-09 19:33:50,653 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-12-09 19:33:51,213 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2018-12-09 19:33:51,668 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2018-12-09 19:33:52,372 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-12-09 19:33:52,869 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-12-09 19:33:53,659 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2018-12-09 19:33:54,286 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-12-09 19:33:54,991 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-12-09 19:33:55,857 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2018-12-09 19:33:56,861 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-12-09 19:33:57,381 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-12-09 19:33:58,088 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-12-09 19:33:58,597 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2018-12-09 19:33:59,361 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2018-12-09 19:33:59,950 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-12-09 19:34:00,865 WARN L180 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2018-12-09 19:34:01,577 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2018-12-09 19:34:02,355 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2018-12-09 19:34:03,375 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-12-09 19:34:04,497 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2018-12-09 19:34:05,096 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2018-12-09 19:34:05,880 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2018-12-09 19:34:06,393 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 73 [2018-12-09 19:34:07,477 WARN L180 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 77 [2018-12-09 19:34:08,119 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2018-12-09 19:34:09,085 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 79 [2018-12-09 19:34:09,792 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 79 [2018-12-09 19:34:10,683 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2018-12-09 19:34:12,046 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2018-12-09 19:34:13,341 WARN L180 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2018-12-09 19:34:14,999 WARN L180 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 94 [2018-12-09 19:34:16,046 WARN L180 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 81 [2018-12-09 19:34:16,777 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2018-12-09 19:34:17,789 WARN L180 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2018-12-09 19:34:18,917 WARN L180 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 90 [2018-12-09 19:34:20,049 WARN L180 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2018-12-09 19:34:21,429 WARN L180 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-12-09 19:34:22,771 WARN L180 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2018-12-09 19:34:23,723 WARN L180 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 87 [2018-12-09 19:34:24,676 WARN L180 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 90 [2018-12-09 19:34:27,776 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2018-12-09 19:34:28,695 WARN L180 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 90 [2018-12-09 19:34:29,672 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2018-12-09 19:34:30,601 WARN L180 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2018-12-09 19:34:32,132 WARN L180 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2018-12-09 19:34:32,951 WARN L180 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2018-12-09 19:34:33,637 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2018-12-09 19:34:34,441 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2018-12-09 19:34:35,442 WARN L180 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2018-12-09 19:34:36,448 WARN L180 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-12-09 19:34:37,528 WARN L180 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 92 [2018-12-09 19:34:38,670 WARN L180 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-12-09 19:34:39,495 WARN L180 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2018-12-09 19:34:40,211 WARN L180 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2018-12-09 19:34:42,897 WARN L180 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-12-09 19:34:43,573 WARN L180 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2018-12-09 19:34:44,313 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-12-09 19:34:45,069 WARN L180 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2018-12-09 19:34:46,438 WARN L180 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2018-12-09 19:34:47,093 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-12-09 19:34:47,719 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-12-09 19:34:48,550 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-12-09 19:34:49,511 WARN L180 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:34:50,452 WARN L180 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-12-09 19:34:51,387 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-12-09 19:34:52,352 WARN L180 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-12-09 19:34:53,046 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2018-12-09 19:34:53,734 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:34:56,018 WARN L180 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2018-12-09 19:34:56,681 WARN L180 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-12-09 19:34:57,353 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2018-12-09 19:34:58,039 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-12-09 19:34:59,135 WARN L180 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2018-12-09 19:34:59,680 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-12-09 19:35:00,575 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-12-09 19:35:01,188 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:35:01,778 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:35:02,401 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-12-09 19:35:03,041 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-12-09 19:35:03,465 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-12-09 19:35:03,867 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-12-09 19:35:05,394 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-12-09 19:35:05,744 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-12-09 19:35:06,437 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-12-09 19:35:06,952 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-12-09 19:35:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:10,433 INFO L93 Difference]: Finished difference Result 7522 states and 18554 transitions. [2018-12-09 19:35:10,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-12-09 19:35:10,434 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 309 [2018-12-09 19:35:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:10,435 INFO L225 Difference]: With dead ends: 7522 [2018-12-09 19:35:10,435 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:35:10,436 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1404 GetRequests, 1178 SyntacticMatches, 12 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14052 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=3354, Invalid=43086, Unknown=0, NotChecked=0, Total=46440 [2018-12-09 19:35:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:35:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:35:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:35:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:35:10,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 309 [2018-12-09 19:35:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:10,436 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:35:10,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-12-09 19:35:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:35:10,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:35:10,438 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 19:35:10,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:35:10 BasicIcfg [2018-12-09 19:35:10,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:35:10,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:35:10,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:35:10,440 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:35:10,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:23:53" (3/4) ... [2018-12-09 19:35:10,442 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:35:10,447 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-12-09 19:35:10,447 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-12-09 19:35:10,449 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-12-09 19:35:10,449 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 19:35:10,449 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:35:10,469 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ca4a3ad2-9d12-4549-8772-e94e6ec2134c/bin-2019/utaipan/witness.graphml [2018-12-09 19:35:10,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:35:10,470 INFO L168 Benchmark]: Toolchain (without parser) took 677233.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 939.3 MB in the beginning and 721.8 MB in the end (delta: 217.5 MB). Peak memory consumption was 362.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.8 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.32 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. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: Boogie Preprocessor took 20.12 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: RCFGBuilder took 262.49 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: TraceAbstraction took 676502.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -2.1 MB). Free memory was 1.0 GB in the beginning and 728.3 MB in the end (delta: 321.2 MB). Peak memory consumption was 319.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:10,470 INFO L168 Benchmark]: Witness Printer took 29.81 ms. Allocated memory is still 1.2 GB. Free memory was 728.3 MB in the beginning and 721.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:10,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 385.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.8 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.32 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 20.12 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 262.49 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 676502.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -2.1 MB). Free memory was 1.0 GB in the beginning and 728.3 MB in the end (delta: 321.2 MB). Peak memory consumption was 319.1 MB. Max. memory is 11.5 GB. * Witness Printer took 29.81 ms. Allocated memory is still 1.2 GB. Free memory was 728.3 MB in the beginning and 721.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1860]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1860]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1860]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1860]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 201 locations, 4 error locations. SAFE Result, 676.4s OverallTime, 17 OverallIterations, 6 TraceHistogramMax, 629.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9440 SDtfs, 61859 SDslu, 225539 SDs, 0 SdLazy, 64638 SolverSat, 2871 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 208.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9999 GetRequests, 8175 SyntacticMatches, 43 SemanticMatches, 1781 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171980 ImplicationChecksByTransitivity, 433.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21688occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 123630 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 39.9s InterpolantComputationTime, 4201 NumberOfCodeBlocks, 4201 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 8020 ConstructedInterpolants, 135 QuantifiedInterpolants, 13278617 SizeOfPredicates, 556 NumberOfNonLiveVariables, 5640 ConjunctsInSsa, 538 ConjunctsInUnsatCore, 47 InterpolantComputations, 7 PerfectInterpolantSequences, 866/8716 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...