./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 162af48526beed8ce59715aaad1198a79a3197bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 162af48526beed8ce59715aaad1198a79a3197bf .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:27:05,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:27:05,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:27:05,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:27:05,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:27:05,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:27:05,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:27:05,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:27:05,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:27:05,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:27:05,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:27:05,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:27:05,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:27:05,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:27:05,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:27:05,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:27:05,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:27:05,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:27:05,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:27:05,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:27:05,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:27:05,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:27:05,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:27:05,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:27:05,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:27:05,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:27:05,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:27:05,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:27:05,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:27:05,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:27:05,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:27:05,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:27:05,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:27:05,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:27:05,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:27:05,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:27:05,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:27:05,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:27:05,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:27:05,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:27:05,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:27:05,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:27:05,716 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:27:05,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:27:05,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:27:05,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:27:05,717 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:27:05,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:27:05,718 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:27:05,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:27:05,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:27:05,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:27:05,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:27:05,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:27:05,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:27:05,719 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:27:05,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:27:05,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:27:05,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:27:05,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:27:05,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:27:05,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:27:05,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:27:05,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:27:05,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:27:05,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:27:05,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:27:05,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:27:05,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:27:05,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:27:05,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:27:05,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 162af48526beed8ce59715aaad1198a79a3197bf [2019-12-07 12:27:05,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:27:05,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:27:05,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:27:05,833 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:27:05,833 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:27:05,834 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/../../sv-benchmarks/c/array-tiling/mbpr4.c [2019-12-07 12:27:05,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/ce77a66a3/311bc358f5d74a40ab5b7520dc1a1d22/FLAG5fadae45b [2019-12-07 12:27:06,299 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:27:06,299 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/sv-benchmarks/c/array-tiling/mbpr4.c [2019-12-07 12:27:06,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/ce77a66a3/311bc358f5d74a40ab5b7520dc1a1d22/FLAG5fadae45b [2019-12-07 12:27:06,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/ce77a66a3/311bc358f5d74a40ab5b7520dc1a1d22 [2019-12-07 12:27:06,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:27:06,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:27:06,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:27:06,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:27:06,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:27:06,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8c33a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06, skipping insertion in model container [2019-12-07 12:27:06,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:27:06,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:27:06,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:27:06,486 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:27:06,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:27:06,522 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:27:06,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06 WrapperNode [2019-12-07 12:27:06,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:27:06,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:27:06,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:27:06,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:27:06,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:27:06,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:27:06,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:27:06,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:27:06,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... [2019-12-07 12:27:06,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:27:06,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:27:06,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:27:06,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:27:06,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:27:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:27:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:27:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:27:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:27:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:27:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:27:06,805 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:27:06,805 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 12:27:06,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:27:06 BoogieIcfgContainer [2019-12-07 12:27:06,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:27:06,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:27:06,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:27:06,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:27:06,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:27:06" (1/3) ... [2019-12-07 12:27:06,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d079067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:27:06, skipping insertion in model container [2019-12-07 12:27:06,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:06" (2/3) ... [2019-12-07 12:27:06,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d079067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:27:06, skipping insertion in model container [2019-12-07 12:27:06,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:27:06" (3/3) ... [2019-12-07 12:27:06,810 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-12-07 12:27:06,816 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:27:06,821 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:27:06,828 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:27:06,843 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:27:06,843 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:27:06,843 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:27:06,843 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:27:06,843 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:27:06,843 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:27:06,843 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:27:06,843 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:27:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-12-07 12:27:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:27:06,859 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:06,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:06,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:06,863 INFO L82 PathProgramCache]: Analyzing trace with hash 219549199, now seen corresponding path program 1 times [2019-12-07 12:27:06,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:06,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713991311] [2019-12-07 12:27:06,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:06,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713991311] [2019-12-07 12:27:06,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:27:06,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:27:06,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839303940] [2019-12-07 12:27:06,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:27:06,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:06,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:27:06,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:27:06,978 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-12-07 12:27:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:06,990 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2019-12-07 12:27:06,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:27:06,991 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-12-07 12:27:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:06,997 INFO L225 Difference]: With dead ends: 66 [2019-12-07 12:27:06,997 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 12:27:06,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:27:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 12:27:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 12:27:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 12:27:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2019-12-07 12:27:07,021 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2019-12-07 12:27:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:07,022 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2019-12-07 12:27:07,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:27:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2019-12-07 12:27:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:27:07,022 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:07,022 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:07,023 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:07,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1179538664, now seen corresponding path program 1 times [2019-12-07 12:27:07,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:07,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31970919] [2019-12-07 12:27:07,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:07,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31970919] [2019-12-07 12:27:07,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:27:07,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:27:07,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039364333] [2019-12-07 12:27:07,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:27:07,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:07,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:27:07,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:27:07,077 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand 4 states. [2019-12-07 12:27:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:07,119 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-12-07 12:27:07,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:27:07,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-12-07 12:27:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:07,120 INFO L225 Difference]: With dead ends: 41 [2019-12-07 12:27:07,120 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 12:27:07,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:27:07,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 12:27:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2019-12-07 12:27:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 12:27:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2019-12-07 12:27:07,125 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2019-12-07 12:27:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:07,125 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2019-12-07 12:27:07,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:27:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2019-12-07 12:27:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:27:07,125 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:07,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:07,126 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1179598246, now seen corresponding path program 1 times [2019-12-07 12:27:07,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:07,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404496118] [2019-12-07 12:27:07,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:07,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404496118] [2019-12-07 12:27:07,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:27:07,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:27:07,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432748134] [2019-12-07 12:27:07,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:27:07,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:27:07,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:27:07,234 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 4 states. [2019-12-07 12:27:07,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:07,298 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2019-12-07 12:27:07,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:27:07,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-12-07 12:27:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:07,299 INFO L225 Difference]: With dead ends: 64 [2019-12-07 12:27:07,299 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 12:27:07,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:27:07,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 12:27:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-12-07 12:27:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 12:27:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-12-07 12:27:07,304 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2019-12-07 12:27:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:07,304 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-12-07 12:27:07,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:27:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2019-12-07 12:27:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 12:27:07,304 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:07,304 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:07,305 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:07,305 INFO L82 PathProgramCache]: Analyzing trace with hash -130988767, now seen corresponding path program 1 times [2019-12-07 12:27:07,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:07,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795411571] [2019-12-07 12:27:07,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:27:07,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795411571] [2019-12-07 12:27:07,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:27:07,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 12:27:07,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763442511] [2019-12-07 12:27:07,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:27:07,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:07,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:27:07,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:27:07,439 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 5 states. [2019-12-07 12:27:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:07,512 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2019-12-07 12:27:07,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:27:07,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-12-07 12:27:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:07,513 INFO L225 Difference]: With dead ends: 71 [2019-12-07 12:27:07,513 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 12:27:07,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:27:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 12:27:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2019-12-07 12:27:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 12:27:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2019-12-07 12:27:07,518 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 21 [2019-12-07 12:27:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:07,518 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2019-12-07 12:27:07,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:27:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2019-12-07 12:27:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:27:07,519 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:07,519 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:07,519 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:07,520 INFO L82 PathProgramCache]: Analyzing trace with hash 956146768, now seen corresponding path program 1 times [2019-12-07 12:27:07,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:07,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852250887] [2019-12-07 12:27:07,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:27:07,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852250887] [2019-12-07 12:27:07,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:27:07,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:27:07,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495829662] [2019-12-07 12:27:07,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:27:07,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:07,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:27:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:27:07,554 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 3 states. [2019-12-07 12:27:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:07,568 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2019-12-07 12:27:07,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:27:07,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-12-07 12:27:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:07,569 INFO L225 Difference]: With dead ends: 59 [2019-12-07 12:27:07,569 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 12:27:07,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:27:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 12:27:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-12-07 12:27:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 12:27:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-12-07 12:27:07,575 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 33 [2019-12-07 12:27:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:07,576 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-12-07 12:27:07,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:27:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-12-07 12:27:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:27:07,577 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:07,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:07,577 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:07,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1977215122, now seen corresponding path program 1 times [2019-12-07 12:27:07,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:07,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17310423] [2019-12-07 12:27:07,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:27:07,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17310423] [2019-12-07 12:27:07,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:27:07,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:27:07,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787365103] [2019-12-07 12:27:07,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:27:07,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:07,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:27:07,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:27:07,625 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 3 states. [2019-12-07 12:27:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:07,637 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2019-12-07 12:27:07,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:27:07,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-12-07 12:27:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:07,638 INFO L225 Difference]: With dead ends: 53 [2019-12-07 12:27:07,638 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 12:27:07,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:27:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 12:27:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-12-07 12:27:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 12:27:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-12-07 12:27:07,643 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 33 [2019-12-07 12:27:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:07,643 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-12-07 12:27:07,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:27:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-12-07 12:27:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:27:07,644 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:07,644 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:07,644 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:07,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1584188112, now seen corresponding path program 1 times [2019-12-07 12:27:07,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:07,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435935851] [2019-12-07 12:27:07,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:08,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435935851] [2019-12-07 12:27:08,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109783252] [2019-12-07 12:27:08,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:08,523 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 12:27:08,529 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:08,603 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:27:08,603 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,611 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,612 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,612 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-12-07 12:27:08,640 INFO L377 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 93 treesize of output 74 [2019-12-07 12:27:08,642 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,642 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,645 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,649 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,652 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,652 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,653 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,654 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,654 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,658 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 38 [2019-12-07 12:27:08,658 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,660 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,660 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,664 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,664 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,664 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:99, output treesize:14 [2019-12-07 12:27:08,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,703 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2019-12-07 12:27:08,703 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,710 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,711 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,711 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-12-07 12:27:08,716 INFO L377 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 135 treesize of output 116 [2019-12-07 12:27:08,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,720 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,721 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,723 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,724 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,725 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,727 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,742 INFO L343 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2019-12-07 12:27:08,743 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 60 [2019-12-07 12:27:08,743 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,747 INFO L614 ElimStorePlain]: treesize reduction 27, result has 20.6 percent of original size [2019-12-07 12:27:08,747 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,752 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,753 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,753 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:14 [2019-12-07 12:27:08,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,758 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2019-12-07 12:27:08,758 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,764 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,765 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,765 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-12-07 12:27:08,770 INFO L377 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 135 treesize of output 116 [2019-12-07 12:27:08,772 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,777 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,778 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,782 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,782 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,797 INFO L343 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2019-12-07 12:27:08,797 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 60 [2019-12-07 12:27:08,798 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,801 INFO L614 ElimStorePlain]: treesize reduction 27, result has 20.6 percent of original size [2019-12-07 12:27:08,801 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,806 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,806 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,807 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:14 [2019-12-07 12:27:08,810 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,811 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2019-12-07 12:27:08,811 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,817 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,818 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,818 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-12-07 12:27:08,842 INFO L377 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 147 treesize of output 126 [2019-12-07 12:27:08,843 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,844 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,845 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,845 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,846 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,849 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,849 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,851 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,852 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,852 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,855 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,855 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,856 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,859 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,860 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,861 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,863 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:08,877 INFO L343 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2019-12-07 12:27:08,877 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 75 [2019-12-07 12:27:08,878 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,885 INFO L614 ElimStorePlain]: treesize reduction 26, result has 43.5 percent of original size [2019-12-07 12:27:08,885 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:08,891 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:08,891 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:08,892 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:156, output treesize:29 [2019-12-07 12:27:08,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:08,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:08,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2019-12-07 12:27:08,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964600801] [2019-12-07 12:27:08,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-12-07 12:27:08,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:08,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-12-07 12:27:08,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2019-12-07 12:27:08,974 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 27 states. [2019-12-07 12:27:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:09,899 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2019-12-07 12:27:09,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 12:27:09,899 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2019-12-07 12:27:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:09,900 INFO L225 Difference]: With dead ends: 107 [2019-12-07 12:27:09,900 INFO L226 Difference]: Without dead ends: 74 [2019-12-07 12:27:09,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 12:27:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-07 12:27:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 40. [2019-12-07 12:27:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 12:27:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-12-07 12:27:09,907 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 33 [2019-12-07 12:27:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:09,907 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-12-07 12:27:09,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-12-07 12:27:09,908 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-12-07 12:27:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 12:27:09,909 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:09,909 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-12-07 12:27:10,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:10,110 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:10,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2128191651, now seen corresponding path program 1 times [2019-12-07 12:27:10,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:10,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697294046] [2019-12-07 12:27:10,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:10,595 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2019-12-07 12:27:10,764 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 57 [2019-12-07 12:27:10,964 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 35 [2019-12-07 12:27:11,201 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 39 [2019-12-07 12:27:11,651 WARN L192 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 35 [2019-12-07 12:27:12,506 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 25 [2019-12-07 12:27:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:12,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697294046] [2019-12-07 12:27:12,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079659059] [2019-12-07 12:27:12,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:12,663 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 12:27:12,665 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:12,702 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:27:12,702 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,709 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,709 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,709 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-12-07 12:27:12,737 INFO L377 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 79 treesize of output 60 [2019-12-07 12:27:12,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,745 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,745 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,749 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-12-07 12:27:12,749 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,750 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,750 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,754 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,754 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,754 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:16 [2019-12-07 12:27:12,799 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,800 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2019-12-07 12:27:12,800 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,806 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,807 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,807 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-12-07 12:27:12,811 INFO L377 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 137 treesize of output 118 [2019-12-07 12:27:12,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,814 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,817 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,820 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,821 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,822 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,843 INFO L343 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2019-12-07 12:27:12,844 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 64 [2019-12-07 12:27:12,844 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,848 INFO L614 ElimStorePlain]: treesize reduction 31, result has 22.5 percent of original size [2019-12-07 12:27:12,848 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,854 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,854 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,854 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:146, output treesize:16 [2019-12-07 12:27:12,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,859 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2019-12-07 12:27:12,859 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,865 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,865 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,865 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-12-07 12:27:12,893 INFO L377 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 149 treesize of output 128 [2019-12-07 12:27:12,894 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,895 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,897 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,898 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,899 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,902 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,902 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,903 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,905 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,906 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,906 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,908 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,908 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,909 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,910 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,910 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:12,931 INFO L343 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2019-12-07 12:27:12,932 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 79 [2019-12-07 12:27:12,932 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,939 INFO L614 ElimStorePlain]: treesize reduction 30, result has 42.3 percent of original size [2019-12-07 12:27:12,939 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:12,945 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:12,945 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:12,946 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:31 [2019-12-07 12:27:13,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:27:13,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:13,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2019-12-07 12:27:13,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771916190] [2019-12-07 12:27:13,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 12:27:13,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:13,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 12:27:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2019-12-07 12:27:13,073 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 28 states. [2019-12-07 12:27:14,643 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-12-07 12:27:15,624 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-12-07 12:27:15,830 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 39 [2019-12-07 12:27:16,056 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-12-07 12:27:16,242 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-12-07 12:27:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:16,606 INFO L93 Difference]: Finished difference Result 151 states and 173 transitions. [2019-12-07 12:27:16,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-12-07 12:27:16,606 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 39 [2019-12-07 12:27:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:16,607 INFO L225 Difference]: With dead ends: 151 [2019-12-07 12:27:16,608 INFO L226 Difference]: Without dead ends: 122 [2019-12-07 12:27:16,610 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2019-12-07 12:27:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-07 12:27:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 46. [2019-12-07 12:27:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 12:27:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-12-07 12:27:16,617 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 39 [2019-12-07 12:27:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:16,618 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-12-07 12:27:16,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 12:27:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-12-07 12:27:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-12-07 12:27:16,619 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:16,619 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-12-07 12:27:16,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:16,820 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:16,821 INFO L82 PathProgramCache]: Analyzing trace with hash -950694858, now seen corresponding path program 2 times [2019-12-07 12:27:16,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:16,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638670753] [2019-12-07 12:27:16,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:17,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638670753] [2019-12-07 12:27:17,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397138593] [2019-12-07 12:27:17,559 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:17,589 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:27:17,589 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:27:17,590 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 12:27:17,591 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:17,628 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:27:17,628 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,634 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:17,635 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,635 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-12-07 12:27:17,657 INFO L377 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 79 treesize of output 60 [2019-12-07 12:27:17,659 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,659 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,660 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,660 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,661 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,662 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,663 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,664 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,664 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,665 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,666 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,669 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-12-07 12:27:17,670 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,671 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:17,671 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,675 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:17,675 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,675 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:16 [2019-12-07 12:27:17,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,719 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2019-12-07 12:27:17,720 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,725 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:17,726 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,726 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-12-07 12:27:17,758 INFO L377 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 149 treesize of output 128 [2019-12-07 12:27:17,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,761 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,769 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,770 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,772 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,772 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:17,788 INFO L343 Elim1Store]: treesize reduction 26, result has 54.4 percent of original size [2019-12-07 12:27:17,788 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 85 [2019-12-07 12:27:17,788 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,795 INFO L614 ElimStorePlain]: treesize reduction 30, result has 42.3 percent of original size [2019-12-07 12:27:17,795 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:17,801 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:17,802 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:17,802 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:31 [2019-12-07 12:27:17,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 12:27:17,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:17,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 31 [2019-12-07 12:27:17,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525954985] [2019-12-07 12:27:17,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-07 12:27:17,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-07 12:27:17,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2019-12-07 12:27:17,944 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 31 states. [2019-12-07 12:27:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:20,154 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2019-12-07 12:27:20,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 12:27:20,155 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2019-12-07 12:27:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:20,156 INFO L225 Difference]: With dead ends: 164 [2019-12-07 12:27:20,156 INFO L226 Difference]: Without dead ends: 141 [2019-12-07 12:27:20,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=913, Invalid=3643, Unknown=0, NotChecked=0, Total=4556 [2019-12-07 12:27:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-12-07 12:27:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 82. [2019-12-07 12:27:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 12:27:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2019-12-07 12:27:20,169 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 45 [2019-12-07 12:27:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:20,169 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2019-12-07 12:27:20,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-07 12:27:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2019-12-07 12:27:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-12-07 12:27:20,170 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:20,170 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:27:20,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:20,371 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:20,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1076444553, now seen corresponding path program 3 times [2019-12-07 12:27:20,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:20,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939564890] [2019-12-07 12:27:20,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:20,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939564890] [2019-12-07 12:27:20,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349594819] [2019-12-07 12:27:20,776 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:20,811 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 12:27:20,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:27:20,812 INFO L264 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 12:27:20,814 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:20,847 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:27:20,847 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:20,851 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:20,851 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:20,851 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-12-07 12:27:20,875 INFO L377 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 79 treesize of output 60 [2019-12-07 12:27:20,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,885 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,886 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,887 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,888 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,889 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,889 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,890 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,891 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,891 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:20,892 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-12-07 12:27:20,893 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:20,894 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:20,894 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:20,899 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:20,899 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:20,899 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:82, output treesize:13 [2019-12-07 12:27:20,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:27:21,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:21,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 28 [2019-12-07 12:27:21,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950218489] [2019-12-07 12:27:21,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 12:27:21,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 12:27:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2019-12-07 12:27:21,007 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 28 states. [2019-12-07 12:27:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:22,682 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2019-12-07 12:27:22,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-12-07 12:27:22,683 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2019-12-07 12:27:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:22,684 INFO L225 Difference]: With dead ends: 176 [2019-12-07 12:27:22,684 INFO L226 Difference]: Without dead ends: 174 [2019-12-07 12:27:22,685 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1071, Invalid=4185, Unknown=0, NotChecked=0, Total=5256 [2019-12-07 12:27:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-12-07 12:27:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 88. [2019-12-07 12:27:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-12-07 12:27:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2019-12-07 12:27:22,692 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 51 [2019-12-07 12:27:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:22,692 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2019-12-07 12:27:22,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 12:27:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2019-12-07 12:27:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 12:27:22,693 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:22,693 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-12-07 12:27:22,893 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:22,894 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:22,894 INFO L82 PathProgramCache]: Analyzing trace with hash -463903588, now seen corresponding path program 4 times [2019-12-07 12:27:22,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:22,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2331818] [2019-12-07 12:27:22,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:27:23,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2331818] [2019-12-07 12:27:23,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274522299] [2019-12-07 12:27:23,158 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:23,188 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 12:27:23,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:27:23,189 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 12:27:23,191 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:23,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 12:27:23,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:23,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:27:23,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:23,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-12-07 12:27:23,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016198229] [2019-12-07 12:27:23,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 12:27:23,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 12:27:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2019-12-07 12:27:23,357 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand 20 states. [2019-12-07 12:27:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:23,564 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2019-12-07 12:27:23,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 12:27:23,564 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2019-12-07 12:27:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:23,565 INFO L225 Difference]: With dead ends: 176 [2019-12-07 12:27:23,565 INFO L226 Difference]: Without dead ends: 85 [2019-12-07 12:27:23,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2019-12-07 12:27:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-12-07 12:27:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2019-12-07 12:27:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 12:27:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2019-12-07 12:27:23,571 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 57 [2019-12-07 12:27:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:23,572 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2019-12-07 12:27:23,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 12:27:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2019-12-07 12:27:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-12-07 12:27:23,572 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:23,572 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2019-12-07 12:27:23,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:23,774 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:23,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2120029463, now seen corresponding path program 5 times [2019-12-07 12:27:23,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:23,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400337548] [2019-12-07 12:27:23,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-12-07 12:27:23,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400337548] [2019-12-07 12:27:23,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205936248] [2019-12-07 12:27:23,915 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:23,957 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-12-07 12:27:23,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:27:23,958 INFO L264 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:27:23,960 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:23,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-12-07 12:27:24,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:24,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-12-07 12:27:24,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618588538] [2019-12-07 12:27:24,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 12:27:24,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:24,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 12:27:24,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-12-07 12:27:24,003 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 13 states. [2019-12-07 12:27:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:24,181 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2019-12-07 12:27:24,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 12:27:24,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2019-12-07 12:27:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:24,182 INFO L225 Difference]: With dead ends: 126 [2019-12-07 12:27:24,182 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 12:27:24,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:27:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 12:27:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2019-12-07 12:27:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-07 12:27:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2019-12-07 12:27:24,187 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 61 [2019-12-07 12:27:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:24,187 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2019-12-07 12:27:24,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 12:27:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2019-12-07 12:27:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-12-07 12:27:24,188 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:24,188 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2019-12-07 12:27:24,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:24,389 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash 969927878, now seen corresponding path program 6 times [2019-12-07 12:27:24,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:24,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354257922] [2019-12-07 12:27:24,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:25,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354257922] [2019-12-07 12:27:25,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535452411] [2019-12-07 12:27:25,923 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:25,966 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-07 12:27:25,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:27:25,967 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 12:27:25,970 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:26,013 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:27:26,013 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,018 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:26,018 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,018 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-12-07 12:27:26,046 INFO L377 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 140 treesize of output 121 [2019-12-07 12:27:26,048 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,050 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,051 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,053 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,057 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,058 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,058 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,060 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 52 [2019-12-07 12:27:26,060 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,062 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:26,062 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,067 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:26,067 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,067 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:149, output treesize:22 [2019-12-07 12:27:26,098 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2019-12-07 12:27:26,098 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,104 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:26,104 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,104 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-12-07 12:27:26,140 INFO L377 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 149 treesize of output 128 [2019-12-07 12:27:26,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,143 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,144 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,144 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,145 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,145 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,147 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,150 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,151 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,151 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,152 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,154 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,154 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,155 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,156 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,156 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:26,157 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2019-12-07 12:27:26,157 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,162 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:26,162 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:26,168 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:26,168 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:26,168 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:31 [2019-12-07 12:27:26,561 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-12-07 12:27:26,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-12-07 12:27:26,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:26,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 35 [2019-12-07 12:27:26,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480386516] [2019-12-07 12:27:26,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-07 12:27:26,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:26,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-07 12:27:26,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 12:27:26,989 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 35 states. [2019-12-07 12:27:28,206 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2019-12-07 12:27:28,523 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-12-07 12:27:32,164 WARN L192 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2019-12-07 12:27:32,657 WARN L192 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2019-12-07 12:27:33,472 WARN L192 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2019-12-07 12:27:34,956 WARN L192 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2019-12-07 12:27:35,761 WARN L192 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2019-12-07 12:27:36,367 WARN L192 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-12-07 12:27:37,228 WARN L192 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-12-07 12:27:38,041 WARN L192 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-12-07 12:27:38,945 WARN L192 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-12-07 12:27:39,668 WARN L192 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-12-07 12:27:40,395 WARN L192 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2019-12-07 12:27:41,010 WARN L192 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2019-12-07 12:27:42,056 WARN L192 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-12-07 12:27:42,409 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2019-12-07 12:27:43,591 WARN L192 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-12-07 12:27:44,433 WARN L192 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-12-07 12:27:45,901 WARN L192 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2019-12-07 12:27:46,679 WARN L192 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2019-12-07 12:27:47,306 WARN L192 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-12-07 12:27:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:27:47,310 INFO L93 Difference]: Finished difference Result 249 states and 274 transitions. [2019-12-07 12:27:47,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-12-07 12:27:47,310 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 73 [2019-12-07 12:27:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:27:47,311 INFO L225 Difference]: With dead ends: 249 [2019-12-07 12:27:47,311 INFO L226 Difference]: Without dead ends: 214 [2019-12-07 12:27:47,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1097, Invalid=6904, Unknown=9, NotChecked=0, Total=8010 [2019-12-07 12:27:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-12-07 12:27:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 122. [2019-12-07 12:27:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-12-07 12:27:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2019-12-07 12:27:47,321 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 73 [2019-12-07 12:27:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:27:47,321 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2019-12-07 12:27:47,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-07 12:27:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2019-12-07 12:27:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-12-07 12:27:47,322 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:27:47,322 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 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] [2019-12-07 12:27:47,522 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:47,523 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:27:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:27:47,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1241558487, now seen corresponding path program 7 times [2019-12-07 12:27:47,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:27:47,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452398555] [2019-12-07 12:27:47,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:27:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:27:49,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452398555] [2019-12-07 12:27:49,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955681637] [2019-12-07 12:27:49,292 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:27:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:27:49,327 INFO L264 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-07 12:27:49,330 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:27:49,424 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:27:49,424 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,429 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,430 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,430 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-12-07 12:27:49,466 INFO L377 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 95 treesize of output 76 [2019-12-07 12:27:49,467 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,468 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,468 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,469 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,474 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,474 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,476 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,476 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,477 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2019-12-07 12:27:49,477 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,478 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,478 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,482 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,482 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,482 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:101, output treesize:16 [2019-12-07 12:27:49,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,555 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2019-12-07 12:27:49,555 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,561 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,561 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,561 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-12-07 12:27:49,608 INFO L377 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 149 treesize of output 128 [2019-12-07 12:27:49,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,611 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,615 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,615 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,620 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,621 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,621 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,623 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,624 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,624 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,625 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,626 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2019-12-07 12:27:49,626 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,629 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,630 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,636 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,636 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,636 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:158, output treesize:31 [2019-12-07 12:27:49,679 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,680 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,680 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,681 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,681 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2019-12-07 12:27:49,681 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,687 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,688 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,688 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-12-07 12:27:49,735 INFO L377 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 155 treesize of output 132 [2019-12-07 12:27:49,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,752 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:49,769 INFO L343 Elim1Store]: treesize reduction 26, result has 54.4 percent of original size [2019-12-07 12:27:49,769 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 94 [2019-12-07 12:27:49,770 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,777 INFO L614 ElimStorePlain]: treesize reduction 30, result has 48.3 percent of original size [2019-12-07 12:27:49,777 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:49,784 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:49,784 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:49,784 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:164, output treesize:37 [2019-12-07 12:27:51,093 WARN L192 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-12-07 12:27:51,098 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,099 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,100 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,100 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,101 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,102 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,103 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,103 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2019-12-07 12:27:51,103 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:51,113 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,114 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:51,114 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:52 [2019-12-07 12:27:51,190 INFO L377 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 167 treesize of output 142 [2019-12-07 12:27:51,191 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,192 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,192 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,193 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,195 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,195 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,196 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,196 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,197 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,198 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,198 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,199 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,199 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,200 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,200 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,201 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,202 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,202 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,203 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 12:27:51,204 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,205 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,205 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,209 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,210 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,211 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,211 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,212 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,213 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,220 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,220 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,221 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,222 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 12:27:51,223 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 79 [2019-12-07 12:27:51,223 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:51,229 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,229 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:51,239 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,239 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:51,240 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:179, output treesize:55 [2019-12-07 12:27:51,489 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-12-07 12:27:51,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,498 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,498 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,499 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,500 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,500 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2019-12-07 12:27:51,501 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:51,511 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,511 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:51,512 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:61 [2019-12-07 12:27:51,582 INFO L377 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 176 treesize of output 149 [2019-12-07 12:27:51,583 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,584 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,585 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,585 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,586 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,591 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,591 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,599 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,599 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,604 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,605 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,605 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,606 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,606 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,607 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,608 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,609 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,611 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,620 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,620 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,621 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,621 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:27:51,649 INFO L343 Elim1Store]: treesize reduction 67, result has 47.7 percent of original size [2019-12-07 12:27:51,649 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 26 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 89 treesize of output 139 [2019-12-07 12:27:51,650 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:27:51,663 INFO L614 ElimStorePlain]: treesize reduction 66, result has 42.6 percent of original size [2019-12-07 12:27:51,663 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:27:51,673 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:27:51,673 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 12:27:51,673 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:188, output treesize:61 [2019-12-07 12:27:52,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:27:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 12:27:52,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:27:52,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24] total 51 [2019-12-07 12:27:52,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256974429] [2019-12-07 12:27:52,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 51 states [2019-12-07 12:27:52,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:27:52,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2019-12-07 12:27:52,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2285, Unknown=1, NotChecked=0, Total=2550 [2019-12-07 12:27:52,302 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 51 states. [2019-12-07 12:28:14,721 WARN L192 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2019-12-07 12:28:17,943 WARN L192 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-12-07 12:28:19,401 WARN L192 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2019-12-07 12:28:20,328 WARN L192 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-12-07 12:28:21,669 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2019-12-07 12:28:22,819 WARN L192 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2019-12-07 12:28:23,502 WARN L192 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2019-12-07 12:28:24,729 WARN L192 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-12-07 12:28:25,524 WARN L192 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-12-07 12:28:26,274 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-12-07 12:28:26,712 WARN L192 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-12-07 12:28:27,574 WARN L192 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 43 [2019-12-07 12:28:27,807 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2019-12-07 12:28:28,288 WARN L192 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-12-07 12:28:29,102 WARN L192 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-12-07 12:28:30,280 WARN L192 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2019-12-07 12:28:30,921 WARN L192 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-12-07 12:28:32,294 WARN L192 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2019-12-07 12:28:32,688 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2019-12-07 12:28:39,005 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-12-07 12:28:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:28:39,872 INFO L93 Difference]: Finished difference Result 392 states and 421 transitions. [2019-12-07 12:28:39,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2019-12-07 12:28:39,873 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 79 [2019-12-07 12:28:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:28:39,874 INFO L225 Difference]: With dead ends: 392 [2019-12-07 12:28:39,874 INFO L226 Difference]: Without dead ends: 382 [2019-12-07 12:28:39,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15946 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=5629, Invalid=41217, Unknown=26, NotChecked=0, Total=46872 [2019-12-07 12:28:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2019-12-07 12:28:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 128. [2019-12-07 12:28:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-12-07 12:28:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2019-12-07 12:28:39,892 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 79 [2019-12-07 12:28:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:28:39,892 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2019-12-07 12:28:39,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 51 states. [2019-12-07 12:28:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2019-12-07 12:28:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-12-07 12:28:39,892 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:28:39,893 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 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] [2019-12-07 12:28:40,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:28:40,094 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:28:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:28:40,094 INFO L82 PathProgramCache]: Analyzing trace with hash -922557846, now seen corresponding path program 8 times [2019-12-07 12:28:40,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:28:40,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423810332] [2019-12-07 12:28:40,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:28:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:28:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:28:40,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423810332] [2019-12-07 12:28:40,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88334457] [2019-12-07 12:28:40,899 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:28:40,940 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:28:40,940 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:28:40,941 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 34 conjunts are in the unsatisfiable core [2019-12-07 12:28:40,944 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:28:41,014 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:28:41,014 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,020 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,020 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,020 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-12-07 12:28:41,050 INFO L377 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 95 treesize of output 76 [2019-12-07 12:28:41,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,053 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,057 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,058 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,060 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,063 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2019-12-07 12:28:41,063 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,064 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,065 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,068 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,068 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,069 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:101, output treesize:16 [2019-12-07 12:28:41,124 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,125 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2019-12-07 12:28:41,125 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,131 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,131 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,131 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-12-07 12:28:41,170 INFO L377 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 149 treesize of output 128 [2019-12-07 12:28:41,171 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,172 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,174 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,175 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,175 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,177 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,178 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,182 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,182 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2019-12-07 12:28:41,187 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,190 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,191 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,197 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,197 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,197 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:158, output treesize:31 [2019-12-07 12:28:41,231 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,233 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,234 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-12-07 12:28:41,234 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,241 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,241 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,241 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2019-12-07 12:28:41,283 INFO L377 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 158 treesize of output 135 [2019-12-07 12:28:41,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,304 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:28:41,316 INFO L343 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2019-12-07 12:28:41,317 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 91 [2019-12-07 12:28:41,317 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,326 INFO L614 ElimStorePlain]: treesize reduction 30, result has 50.8 percent of original size [2019-12-07 12:28:41,326 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:41,333 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:41,334 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:28:41,334 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:167, output treesize:40 [2019-12-07 12:28:41,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 12:28:41,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:28:41,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20] total 42 [2019-12-07 12:28:41,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011966696] [2019-12-07 12:28:41,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-07 12:28:41,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:28:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-07 12:28:41,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 12:28:41,775 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 42 states. [2019-12-07 12:28:50,856 WARN L192 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2019-12-07 12:28:52,603 WARN L192 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-12-07 12:28:54,695 WARN L192 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2019-12-07 12:28:55,513 WARN L192 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-12-07 12:28:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:28:55,755 INFO L93 Difference]: Finished difference Result 296 states and 318 transitions. [2019-12-07 12:28:55,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-12-07 12:28:55,756 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 85 [2019-12-07 12:28:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:28:55,758 INFO L225 Difference]: With dead ends: 296 [2019-12-07 12:28:55,758 INFO L226 Difference]: Without dead ends: 239 [2019-12-07 12:28:55,759 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 70 SyntacticMatches, 7 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4052 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1593, Invalid=12209, Unknown=4, NotChecked=0, Total=13806 [2019-12-07 12:28:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-12-07 12:28:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 134. [2019-12-07 12:28:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-12-07 12:28:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2019-12-07 12:28:55,778 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 85 [2019-12-07 12:28:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:28:55,778 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2019-12-07 12:28:55,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-07 12:28:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2019-12-07 12:28:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-12-07 12:28:55,778 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:28:55,779 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 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] [2019-12-07 12:28:55,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:28:55,980 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:28:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:28:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1564336963, now seen corresponding path program 9 times [2019-12-07 12:28:55,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:28:55,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199581388] [2019-12-07 12:28:55,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:28:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:28:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 90 proven. 76 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 12:28:57,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199581388] [2019-12-07 12:28:57,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903527431] [2019-12-07 12:28:57,004 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:28:57,077 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-12-07 12:28:57,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:28:57,079 INFO L264 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 12:28:57,080 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:28:57,115 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:28:57,115 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:28:57,118 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:28:57,118 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:28:57,118 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-12-07 12:28:57,142 INFO L377 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 95 treesize of output 76 [2019-12-07 12:28:57,297 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 46 [2019-12-07 12:28:57,297 INFO L343 Elim1Store]: treesize reduction 917, result has 10.4 percent of original size [2019-12-07 12:28:57,297 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 390 treesize of output 310 [2019-12-07 12:28:57,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:28:57,310 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@59755b38 [2019-12-07 12:28:57,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 12:28:57,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2019-12-07 12:28:57,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991714169] [2019-12-07 12:28:57,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-07 12:28:57,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:28:57,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-07 12:28:57,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2019-12-07 12:28:57,311 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 23 states. [2019-12-07 12:28:57,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:28:57,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:28:57,512 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@59755b38 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.lock(ManagedScript.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:354) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:127) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:60) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:62) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) 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:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 12:28:57,515 INFO L168 Benchmark]: Toolchain (without parser) took 111200.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:28:57,515 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:28:57,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -147.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:28:57,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:28:57,516 INFO L168 Benchmark]: Boogie Preprocessor took 21.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:28:57,516 INFO L168 Benchmark]: RCFGBuilder took 229.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:28:57,516 INFO L168 Benchmark]: TraceAbstraction took 110708.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:28:57,517 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 207.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -147.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 229.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 110708.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@59755b38 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@59755b38: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.lock(ManagedScript.java:83) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 12:28:58,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:28:58,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:28:58,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:28:58,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:28:58,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:28:58,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:28:58,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:28:58,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:28:58,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:28:58,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:28:58,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:28:58,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:28:58,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:28:58,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:28:58,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:28:58,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:28:58,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:28:58,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:28:58,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:28:58,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:28:58,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:28:58,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:28:58,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:28:58,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:28:58,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:28:58,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:28:58,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:28:58,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:28:58,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:28:58,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:28:58,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:28:58,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:28:58,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:28:58,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:28:58,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:28:58,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:28:58,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:28:58,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:28:58,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:28:58,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:28:58,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 12:28:58,915 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:28:58,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:28:58,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:28:58,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:28:58,916 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:28:58,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:28:58,916 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:28:58,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:28:58,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:28:58,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:28:58,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:28:58,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:28:58,917 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:28:58,917 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:28:58,918 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:28:58,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:28:58,918 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:28:58,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:28:58,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:28:58,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:28:58,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 12:28:58,919 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:28:58,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:28:58,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:28:58,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:28:58,920 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 162af48526beed8ce59715aaad1198a79a3197bf [2019-12-07 12:28:59,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:28:59,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:28:59,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:28:59,101 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:28:59,101 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:28:59,102 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/../../sv-benchmarks/c/array-tiling/mbpr4.c [2019-12-07 12:28:59,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/87d1b9672/d3430121c1b148a98b501f1abcaed33b/FLAG9d472ec50 [2019-12-07 12:28:59,498 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:28:59,498 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/sv-benchmarks/c/array-tiling/mbpr4.c [2019-12-07 12:28:59,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/87d1b9672/d3430121c1b148a98b501f1abcaed33b/FLAG9d472ec50 [2019-12-07 12:28:59,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/data/87d1b9672/d3430121c1b148a98b501f1abcaed33b [2019-12-07 12:28:59,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:28:59,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:28:59,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:28:59,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:28:59,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:28:59,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c728dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59, skipping insertion in model container [2019-12-07 12:28:59,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:28:59,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:28:59,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:28:59,664 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:28:59,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:28:59,742 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:28:59,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59 WrapperNode [2019-12-07 12:28:59,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:28:59,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:28:59,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:28:59,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:28:59,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:28:59,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:28:59,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:28:59,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:28:59,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... [2019-12-07 12:28:59,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:28:59,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:28:59,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:28:59,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:28:59,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:28:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 12:28:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:28:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:28:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:28:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 12:28:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:29:00,168 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:29:00,169 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 12:29:00,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:00 BoogieIcfgContainer [2019-12-07 12:29:00,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:29:00,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:29:00,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:29:00,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:29:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:28:59" (1/3) ... [2019-12-07 12:29:00,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43eb2d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:29:00, skipping insertion in model container [2019-12-07 12:29:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:59" (2/3) ... [2019-12-07 12:29:00,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43eb2d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:29:00, skipping insertion in model container [2019-12-07 12:29:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:00" (3/3) ... [2019-12-07 12:29:00,174 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-12-07 12:29:00,180 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:29:00,185 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:29:00,192 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:29:00,206 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:29:00,207 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:29:00,207 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:29:00,207 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:29:00,207 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:29:00,207 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:29:00,207 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:29:00,207 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:29:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-12-07 12:29:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:29:00,221 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:00,222 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:00,222 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:00,226 INFO L82 PathProgramCache]: Analyzing trace with hash 219549199, now seen corresponding path program 1 times [2019-12-07 12:29:00,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:00,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393195858] [2019-12-07 12:29:00,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:00,277 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 12:29:00,281 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:29:00,291 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:29:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:29:00,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393195858] [2019-12-07 12:29:00,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:29:00,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 12:29:00,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361280182] [2019-12-07 12:29:00,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:29:00,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:29:00,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:29:00,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:29:00,310 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-12-07 12:29:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:29:00,322 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2019-12-07 12:29:00,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:29:00,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-12-07 12:29:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:29:00,330 INFO L225 Difference]: With dead ends: 66 [2019-12-07 12:29:00,330 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 12:29:00,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:29:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 12:29:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 12:29:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 12:29:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2019-12-07 12:29:00,356 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2019-12-07 12:29:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:29:00,356 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2019-12-07 12:29:00,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:29:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2019-12-07 12:29:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:29:00,357 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:00,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:00,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:29:00,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1179538664, now seen corresponding path program 1 times [2019-12-07 12:29:00,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:00,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213450577] [2019-12-07 12:29:00,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:00,631 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:29:00,632 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:29:00,675 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:29:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:29:00,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213450577] [2019-12-07 12:29:00,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:29:00,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 12:29:00,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712449566] [2019-12-07 12:29:00,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:29:00,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:29:00,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:29:00,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:29:00,940 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand 6 states. [2019-12-07 12:29:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:29:01,777 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2019-12-07 12:29:01,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:29:01,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-07 12:29:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:29:01,783 INFO L225 Difference]: With dead ends: 68 [2019-12-07 12:29:01,783 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 12:29:01,783 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:29:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 12:29:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-12-07 12:29:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 12:29:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2019-12-07 12:29:01,788 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 17 [2019-12-07 12:29:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:29:01,788 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2019-12-07 12:29:01,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:29:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2019-12-07 12:29:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 12:29:01,789 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:01,789 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:01,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 12:29:01,991 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash -131048349, now seen corresponding path program 1 times [2019-12-07 12:29:01,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:01,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789820613] [2019-12-07 12:29:01,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:02,057 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 12:29:02,059 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:02,288 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8 [2019-12-07 12:29:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:29:02,891 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:29:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:29:03,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789820613] [2019-12-07 12:29:03,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:29:03,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-12-07 12:29:03,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956786837] [2019-12-07 12:29:03,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 12:29:03,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:29:03,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 12:29:03,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-12-07 12:29:03,819 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 13 states. [2019-12-07 12:29:04,320 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2019-12-07 12:29:04,577 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2019-12-07 12:29:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:29:06,509 INFO L93 Difference]: Finished difference Result 130 states and 173 transitions. [2019-12-07 12:29:06,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 12:29:06,515 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2019-12-07 12:29:06,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:29:06,516 INFO L225 Difference]: With dead ends: 130 [2019-12-07 12:29:06,516 INFO L226 Difference]: Without dead ends: 107 [2019-12-07 12:29:06,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2019-12-07 12:29:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-12-07 12:29:06,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 66. [2019-12-07 12:29:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 12:29:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2019-12-07 12:29:06,529 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 21 [2019-12-07 12:29:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:29:06,529 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2019-12-07 12:29:06,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 12:29:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2019-12-07 12:29:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:29:06,531 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:06,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:06,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 12:29:06,732 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash 956087186, now seen corresponding path program 1 times [2019-12-07 12:29:06,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:06,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815145963] [2019-12-07 12:29:06,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:06,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:29:06,815 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:29:06,833 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:29:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:29:06,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815145963] [2019-12-07 12:29:06,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:29:06,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 12:29:06,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735758531] [2019-12-07 12:29:06,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:29:06,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:29:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:29:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:29:06,845 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 4 states. [2019-12-07 12:29:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:29:06,884 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2019-12-07 12:29:06,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:29:06,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-12-07 12:29:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:29:06,885 INFO L225 Difference]: With dead ends: 97 [2019-12-07 12:29:06,886 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 12:29:06,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:29:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 12:29:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-12-07 12:29:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 12:29:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2019-12-07 12:29:06,896 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 33 [2019-12-07 12:29:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:29:06,897 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2019-12-07 12:29:06,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:29:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2019-12-07 12:29:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:29:06,898 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:06,898 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:07,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 12:29:07,100 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:07,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1977155540, now seen corresponding path program 1 times [2019-12-07 12:29:07,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:07,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726965864] [2019-12-07 12:29:07,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:07,178 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:29:07,180 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:29:07,191 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:29:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:29:07,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726965864] [2019-12-07 12:29:07,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:29:07,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 12:29:07,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752704108] [2019-12-07 12:29:07,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:29:07,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:29:07,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:29:07,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:29:07,201 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 4 states. [2019-12-07 12:29:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:29:07,234 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2019-12-07 12:29:07,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:29:07,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-12-07 12:29:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:29:07,236 INFO L225 Difference]: With dead ends: 82 [2019-12-07 12:29:07,236 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 12:29:07,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:29:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 12:29:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-12-07 12:29:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 12:29:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2019-12-07 12:29:07,246 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 33 [2019-12-07 12:29:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:29:07,246 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2019-12-07 12:29:07,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:29:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2019-12-07 12:29:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:29:07,248 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:07,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:07,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 12:29:07,449 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1584128530, now seen corresponding path program 1 times [2019-12-07 12:29:07,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:07,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129992874] [2019-12-07 12:29:07,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:07,544 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:29:07,545 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 12:29:07,555 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:29:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 12:29:07,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129992874] [2019-12-07 12:29:07,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:29:07,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-12-07 12:29:07,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428789616] [2019-12-07 12:29:07,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:29:07,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:29:07,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:29:07,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:29:07,564 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 5 states. [2019-12-07 12:29:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:29:07,598 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2019-12-07 12:29:07,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:29:07,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-12-07 12:29:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:29:07,599 INFO L225 Difference]: With dead ends: 80 [2019-12-07 12:29:07,599 INFO L226 Difference]: Without dead ends: 78 [2019-12-07 12:29:07,600 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:29:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-12-07 12:29:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2019-12-07 12:29:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 12:29:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2019-12-07 12:29:07,609 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 33 [2019-12-07 12:29:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:29:07,610 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2019-12-07 12:29:07,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:29:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2019-12-07 12:29:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 12:29:07,611 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:29:07,611 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:29:07,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 12:29:07,812 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:29:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:29:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1584188112, now seen corresponding path program 1 times [2019-12-07 12:29:07,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:29:07,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326201102] [2019-12-07 12:29:07,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 12:29:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:07,910 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 12:29:07,912 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:07,951 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-12-07 12:29:07,951 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:29:07,961 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:29:07,961 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:29:07,962 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-12-07 12:29:07,986 INFO L377 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 95 treesize of output 76 [2019-12-07 12:29:07,988 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,989 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,991 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,992 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,995 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,995 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:07,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:08,000 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:08,001 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:08,002 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:08,003 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:08,003 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:29:08,006 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2019-12-07 12:29:08,007 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:29:08,009 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:29:08,009 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:29:08,014 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:29:08,015 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:29:08,015 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:101, output treesize:14 [2019-12-07 12:29:08,044 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-12-07 12:29:08,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2019-12-07 12:29:08,045 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:29:08,062 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:29:08,063 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:29:08,063 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:16 [2019-12-07 12:29:08,077 INFO L377 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 135 treesize of output 116 [2019-12-07 12:29:51,553 WARN L192 SmtUtils]: Spent 43.46 s on a formula simplification. DAG size of input: 137 DAG size of output: 51 [2019-12-07 12:29:51,554 INFO L343 Elim1Store]: treesize reduction 1193, result has 10.6 percent of original size [2019-12-07 12:29:51,554 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 616 treesize of output 444 [2019-12-07 12:29:51,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,579 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 12:29:51,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326201102] [2019-12-07 12:29:51,609 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@4e2fbc6b [2019-12-07 12:29:51,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [637548369] [2019-12-07 12:29:51,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:29:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:51,724 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 12:29:51,726 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:51,728 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@4e2fbc6b [2019-12-07 12:29:51,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086200824] [2019-12-07 12:29:51,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_151134d1-a5b7-4076-bbf9-092bb3d98b40/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:29:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:29:51,791 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 12:29:51,793 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:29:51,794 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@4e2fbc6b [2019-12-07 12:29:51,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:29:51,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 12:29:51,795 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 12:29:51,795 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:29:52,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:29:52,428 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 12:29:52,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:29:52 BoogieIcfgContainer [2019-12-07 12:29:52,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:29:52,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:29:52,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:29:52,428 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:29:52,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:00" (3/4) ... [2019-12-07 12:29:52,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:29:52,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:29:52,432 INFO L168 Benchmark]: Toolchain (without parser) took 52915.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:29:52,433 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:29:52,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:29:52,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:29:52,434 INFO L168 Benchmark]: Boogie Preprocessor took 24.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:29:52,434 INFO L168 Benchmark]: RCFGBuilder took 372.01 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:29:52,434 INFO L168 Benchmark]: TraceAbstraction took 52257.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -15.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:29:52,435 INFO L168 Benchmark]: Witness Printer took 3.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:29:52,436 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 224.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.65 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 24.48 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 372.01 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 52257.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -15.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.19 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L6] int CELLCOUNT; [L10] CELLCOUNT = __VERIFIER_nondet_int() [L11] COND TRUE CELLCOUNT > 1 [L13] int MINVAL=2; [L14] int i; [L15] int volArray[CELLCOUNT]; [L16] int CCCELVOL4 = 5; [L17] int CCCELVOL3 = 7; [L18] int CCCELVOL2 = 3; [L19] int CCCELVOL1 = 1; [L21] COND FALSE !(CELLCOUNT % 4 != 0) [L24] i = 1 [L24] COND TRUE i <= CELLCOUNT/4 [L26] COND TRUE CCCELVOL4 >= MINVAL [L28] volArray[i*4 - 4] = CCCELVOL4 [L34] EXPR volArray[i*4 - 3] [L34] volArray[i*4 - 3] = volArray[i*4 - 3] [L35] EXPR volArray[i*4 - 2] [L35] volArray[i*4 - 2] = volArray[i*4 - 2] [L36] EXPR volArray[i*4 - 1] [L36] volArray[i*4 - 1] = volArray[i*4 - 1] [L24] i++ [L24] COND FALSE !(i <= CELLCOUNT/4) [L39] i = 1 [L39] COND TRUE i <= CELLCOUNT/4 [L41] COND TRUE CCCELVOL3 >= MINVAL [L43] volArray[i*4 - 3] = CCCELVOL3 [L49] EXPR volArray[i*4 - 4] [L49] volArray[i*4 - 4] = volArray[i*4 - 4] [L50] EXPR volArray[i*4 - 2] [L50] volArray[i*4 - 2] = volArray[i*4 - 2] [L51] EXPR volArray[i*4 - 1] [L51] volArray[i*4 - 1] = volArray[i*4 - 1] [L39] i++ [L39] COND FALSE !(i <= CELLCOUNT/4) [L54] i = 1 [L54] COND TRUE i <= CELLCOUNT/4 [L56] COND TRUE CCCELVOL2 >= MINVAL [L58] volArray[i*4 - 2] = CCCELVOL2 [L64] EXPR volArray[i*4 - 4] [L64] volArray[i*4 - 4] = volArray[i*4 - 4] [L65] EXPR volArray[i*4 - 3] [L65] volArray[i*4 - 3] = volArray[i*4 - 3] [L66] EXPR volArray[i*4 - 1] [L66] volArray[i*4 - 1] = volArray[i*4 - 1] [L54] i++ [L54] COND FALSE !(i <= CELLCOUNT/4) [L69] i = 1 [L69] COND TRUE i <= CELLCOUNT/4 [L71] COND FALSE !(CCCELVOL1 >= MINVAL) [L77] volArray[i*4 - 1] = 0 [L79] EXPR volArray[i*4 - 4] [L79] volArray[i*4 - 4] = volArray[i*4 - 4] [L80] EXPR volArray[i*4 - 3] [L80] volArray[i*4 - 3] = volArray[i*4 - 3] [L81] EXPR volArray[i*4 - 2] [L81] volArray[i*4 - 2] = volArray[i*4 - 2] [L69] i++ [L69] COND FALSE !(i <= CELLCOUNT/4) [L84] i = 0 [L84] COND TRUE i < CELLCOUNT [L86] EXPR volArray[i] [L86] volArray[i] >= MINVAL || volArray[i] == 0 [L86] EXPR volArray[i] [L86] volArray[i] >= MINVAL || volArray[i] == 0 [L3] COND TRUE !(cond) [L3] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: UNKNOWN, OverallTime: 52.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 417 SDslu, 116 SDs, 0 SdLazy, 288 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 62 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 23652 SizeOfPredicates, 13 NumberOfNonLiveVariables, 299 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 24/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...