./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f633d6d31a5ab4cff0448367c5d8cec927cf3a8f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:18:05,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:18:05,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:18:05,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:18:05,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:18:05,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:18:05,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:18:05,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:18:05,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:18:05,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:18:05,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:18:05,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:18:05,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:18:05,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:18:05,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:18:05,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:18:05,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:18:05,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:18:05,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:18:05,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:18:05,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:18:05,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:18:05,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:18:05,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:18:05,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:18:05,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:18:05,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:18:05,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:18:05,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:18:05,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:18:05,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:18:05,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:18:05,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:18:05,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:18:05,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:18:05,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:18:05,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:18:05,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:18:05,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:18:05,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:18:05,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:18:05,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-30 00:18:05,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:18:05,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:18:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:18:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:18:05,784 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:18:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:18:05,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:18:05,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:18:05,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:18:05,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:18:05,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:18:05,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:18:05,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:18:05,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:18:05,787 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 00:18:05,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:18:05,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:18:05,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:18:05,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:18:05,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:18:05,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:18:05,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:18:05,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:18:05,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:18:05,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:18:05,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:18:05,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:18:05,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:18:05,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:18:05,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:18:05,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:18:05,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f633d6d31a5ab4cff0448367c5d8cec927cf3a8f [2020-11-30 00:18:06,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:18:06,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:18:06,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:18:06,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:18:06,238 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:18:06,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2020-11-30 00:18:06,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/data/d76880cad/f33e78e646964965bf41af3f1b40915a/FLAG7f950a2ed [2020-11-30 00:18:07,046 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:18:07,046 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2020-11-30 00:18:07,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/data/d76880cad/f33e78e646964965bf41af3f1b40915a/FLAG7f950a2ed [2020-11-30 00:18:07,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/data/d76880cad/f33e78e646964965bf41af3f1b40915a [2020-11-30 00:18:07,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:18:07,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:18:07,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:07,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:18:07,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:18:07,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7ab243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07, skipping insertion in model container [2020-11-30 00:18:07,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:18:07,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:18:07,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:07,721 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:18:07,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:07,772 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:18:07,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07 WrapperNode [2020-11-30 00:18:07,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:07,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:07,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:18:07,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:18:07,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:07,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:18:07,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:18:07,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:18:07,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:18:07,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:18:07,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:18:07,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:18:07,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:18:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:18:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:18:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:18:08,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:18:08,250 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:18:08,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:08 BoogieIcfgContainer [2020-11-30 00:18:08,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:18:08,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:18:08,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:18:08,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:18:08,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:18:07" (1/3) ... [2020-11-30 00:18:08,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1577ef8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:08, skipping insertion in model container [2020-11-30 00:18:08,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (2/3) ... [2020-11-30 00:18:08,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1577ef8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:08, skipping insertion in model container [2020-11-30 00:18:08,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:08" (3/3) ... [2020-11-30 00:18:08,276 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.i [2020-11-30 00:18:08,290 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:18:08,321 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 00:18:08,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:18:08,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:18:08,375 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:18:08,375 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:18:08,376 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:18:08,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:18:08,376 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:18:08,376 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:18:08,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:18:08,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-30 00:18:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:18:08,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:08,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:18:08,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:08,421 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2020-11-30 00:18:08,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:08,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496296276] [2020-11-30 00:18:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:08,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496296276] [2020-11-30 00:18:08,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:08,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:18:08,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577201026] [2020-11-30 00:18:08,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:18:08,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:18:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:08,724 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-11-30 00:18:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:08,838 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-11-30 00:18:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:18:08,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 00:18:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:08,850 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:18:08,851 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:18:08,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:18:08,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-11-30 00:18:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:18:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-30 00:18:08,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-11-30 00:18:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:08,890 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-30 00:18:08,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:18:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-30 00:18:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:18:08,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:08,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:18:08,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:18:08,892 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:08,894 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2020-11-30 00:18:08,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:08,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367978941] [2020-11-30 00:18:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:08,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367978941] [2020-11-30 00:18:08,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:08,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:18:08,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404278812] [2020-11-30 00:18:08,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:18:08,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:08,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:18:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:08,953 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-11-30 00:18:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:09,014 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-30 00:18:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:18:09,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 00:18:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:09,016 INFO L225 Difference]: With dead ends: 16 [2020-11-30 00:18:09,016 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:18:09,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:18:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:18:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:18:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 00:18:09,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2020-11-30 00:18:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:09,023 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 00:18:09,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:18:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 00:18:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:18:09,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:09,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:09,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:18:09,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2020-11-30 00:18:09,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:09,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183265634] [2020-11-30 00:18:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:09,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183265634] [2020-11-30 00:18:09,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:09,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:09,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947227823] [2020-11-30 00:18:09,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:18:09,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:09,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:18:09,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:18:09,144 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-30 00:18:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:09,229 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 00:18:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:18:09,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:18:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:09,231 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:18:09,231 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:18:09,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:18:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-30 00:18:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:18:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 00:18:09,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-30 00:18:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:09,238 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 00:18:09,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:18:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 00:18:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:18:09,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:09,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:09,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:18:09,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:09,242 INFO L82 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2020-11-30 00:18:09,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:09,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430148836] [2020-11-30 00:18:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:09,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430148836] [2020-11-30 00:18:09,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:09,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:09,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710574875] [2020-11-30 00:18:09,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:18:09,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:09,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:18:09,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:18:09,315 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-11-30 00:18:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:09,379 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-30 00:18:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:18:09,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 00:18:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:09,381 INFO L225 Difference]: With dead ends: 16 [2020-11-30 00:18:09,381 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:18:09,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:18:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:18:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:18:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 00:18:09,387 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-30 00:18:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:09,387 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 00:18:09,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:18:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 00:18:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:18:09,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:09,389 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:09,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:18:09,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:09,391 INFO L82 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2020-11-30 00:18:09,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:09,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303356047] [2020-11-30 00:18:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:09,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303356047] [2020-11-30 00:18:09,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379355038] [2020-11-30 00:18:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:09,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:18:09,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:09,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:09,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-30 00:18:09,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807376821] [2020-11-30 00:18:09,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:18:09,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:09,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:18:09,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:18:09,738 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-11-30 00:18:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:09,858 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-30 00:18:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:18:09,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-11-30 00:18:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:09,860 INFO L225 Difference]: With dead ends: 21 [2020-11-30 00:18:09,860 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 00:18:09,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:18:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 00:18:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-11-30 00:18:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:18:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 00:18:09,866 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-11-30 00:18:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:09,867 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 00:18:09,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:18:09,867 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 00:18:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:18:09,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:09,868 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:10,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:10,072 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2020-11-30 00:18:10,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:10,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636153990] [2020-11-30 00:18:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:10,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636153990] [2020-11-30 00:18:10,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846155623] [2020-11-30 00:18:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:10,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:18:10,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:10,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:18:10,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2020-11-30 00:18:10,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473261814] [2020-11-30 00:18:10,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:18:10,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:10,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:18:10,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:18:10,311 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-11-30 00:18:10,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:10,395 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-30 00:18:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:18:10,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 00:18:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:10,397 INFO L225 Difference]: With dead ends: 18 [2020-11-30 00:18:10,397 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 00:18:10,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:18:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 00:18:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 00:18:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 00:18:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-30 00:18:10,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-11-30 00:18:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:10,402 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-30 00:18:10,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:18:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-30 00:18:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:18:10,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:10,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:10,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:10,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2020-11-30 00:18:10,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:10,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093622855] [2020-11-30 00:18:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:10,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093622855] [2020-11-30 00:18:10,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828165914] [2020-11-30 00:18:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:10,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:18:10,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:10,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:10,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-30 00:18:10,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439430537] [2020-11-30 00:18:10,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:18:10,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:10,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:18:10,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:18:10,781 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-11-30 00:18:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:10,860 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-30 00:18:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:18:10,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 00:18:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:10,862 INFO L225 Difference]: With dead ends: 21 [2020-11-30 00:18:10,862 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 00:18:10,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:18:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 00:18:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-30 00:18:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:18:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 00:18:10,868 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-11-30 00:18:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:10,870 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 00:18:10,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:18:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 00:18:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:18:10,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:10,872 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 00:18:11,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:11,089 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2020-11-30 00:18:11,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:11,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202736036] [2020-11-30 00:18:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:11,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202736036] [2020-11-30 00:18:11,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358934296] [2020-11-30 00:18:11,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:11,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:18:11,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:11,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:18:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:11,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:11,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2020-11-30 00:18:11,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511435998] [2020-11-30 00:18:11,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:18:11,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:11,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:18:11,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:18:11,449 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 13 states. [2020-11-30 00:18:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:11,633 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-30 00:18:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:18:11,634 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-11-30 00:18:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:11,635 INFO L225 Difference]: With dead ends: 24 [2020-11-30 00:18:11,635 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:18:11,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:18:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:18:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-30 00:18:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 00:18:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-30 00:18:11,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-11-30 00:18:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:11,641 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-30 00:18:11,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:18:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-30 00:18:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:18:11,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:11,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-30 00:18:11,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:11,843 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:11,844 INFO L82 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 2 times [2020-11-30 00:18:11,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:11,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068884528] [2020-11-30 00:18:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:11,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068884528] [2020-11-30 00:18:11,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176003317] [2020-11-30 00:18:11,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:12,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:18:12,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:12,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:18:12,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:18:12,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:12,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2020-11-30 00:18:12,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685039359] [2020-11-30 00:18:12,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:18:12,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:12,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:18:12,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:18:12,105 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 11 states. [2020-11-30 00:18:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:12,363 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-30 00:18:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:18:12,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-11-30 00:18:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:12,366 INFO L225 Difference]: With dead ends: 26 [2020-11-30 00:18:12,366 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:18:12,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:18:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:18:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-11-30 00:18:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 00:18:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-30 00:18:12,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2020-11-30 00:18:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:12,380 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-30 00:18:12,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:18:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-30 00:18:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:18:12,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:12,381 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-30 00:18:12,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:12,601 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:12,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:12,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 3 times [2020-11-30 00:18:12,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:12,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219017718] [2020-11-30 00:18:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:12,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219017718] [2020-11-30 00:18:12,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658097907] [2020-11-30 00:18:12,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:12,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:18:12,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:12,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:18:12,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:13,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:13,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-11-30 00:18:13,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079000089] [2020-11-30 00:18:13,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 00:18:13,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:13,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 00:18:13,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:18:13,121 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 16 states. [2020-11-30 00:18:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:13,649 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-30 00:18:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:18:13,650 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2020-11-30 00:18:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:13,650 INFO L225 Difference]: With dead ends: 28 [2020-11-30 00:18:13,650 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:18:13,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-11-30 00:18:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:18:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-30 00:18:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:18:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-30 00:18:13,656 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-11-30 00:18:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:13,657 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-30 00:18:13,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:18:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-30 00:18:13,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:18:13,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:13,658 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2020-11-30 00:18:13,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:13,876 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:13,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:13,877 INFO L82 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 4 times [2020-11-30 00:18:13,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:13,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451794054] [2020-11-30 00:18:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:14,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451794054] [2020-11-30 00:18:14,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441913287] [2020-11-30 00:18:14,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:14,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:18:14,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:14,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:18:14,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:14,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:14,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2020-11-30 00:18:14,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792800597] [2020-11-30 00:18:14,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-30 00:18:14,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:14,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-30 00:18:14,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-11-30 00:18:14,431 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 20 states. [2020-11-30 00:18:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:14,962 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-11-30 00:18:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:18:14,963 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2020-11-30 00:18:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:14,964 INFO L225 Difference]: With dead ends: 35 [2020-11-30 00:18:14,964 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 00:18:14,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:18:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 00:18:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-11-30 00:18:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:18:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-30 00:18:14,968 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-11-30 00:18:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:14,969 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-30 00:18:14,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-30 00:18:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-30 00:18:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:18:14,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:14,969 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1] [2020-11-30 00:18:15,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:15,170 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash -977343119, now seen corresponding path program 5 times [2020-11-30 00:18:15,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:15,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760531671] [2020-11-30 00:18:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:15,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760531671] [2020-11-30 00:18:15,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444980310] [2020-11-30 00:18:15,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:15,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-30 00:18:15,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:18:15,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:15,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:15,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2020-11-30 00:18:15,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420536437] [2020-11-30 00:18:15,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-30 00:18:15,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:15,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-30 00:18:15,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-11-30 00:18:15,898 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 24 states. [2020-11-30 00:18:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:16,473 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-11-30 00:18:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:18:16,475 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2020-11-30 00:18:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:16,476 INFO L225 Difference]: With dead ends: 40 [2020-11-30 00:18:16,476 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:18:16,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 00:18:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:18:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-30 00:18:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:18:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-30 00:18:16,490 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-11-30 00:18:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:16,491 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-30 00:18:16,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-30 00:18:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-30 00:18:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 00:18:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:16,492 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2020-11-30 00:18:16,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 00:18:16,721 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1362746405, now seen corresponding path program 6 times [2020-11-30 00:18:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:16,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731034876] [2020-11-30 00:18:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:16,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731034876] [2020-11-30 00:18:16,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635991329] [2020-11-30 00:18:16,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:18:16,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-30 00:18:16,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:16,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:18:16,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:24,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:24,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2020-11-30 00:18:24,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034215549] [2020-11-30 00:18:24,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-30 00:18:24,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-30 00:18:24,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=683, Unknown=8, NotChecked=0, Total=756 [2020-11-30 00:18:24,729 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 28 states. [2020-11-30 00:18:25,535 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-11-30 00:18:26,375 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-11-30 00:18:48,923 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-11-30 00:18:56,250 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-30 00:19:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:07,006 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-11-30 00:19:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 00:19:07,006 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 35 [2020-11-30 00:19:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:07,007 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:19:07,007 INFO L226 Difference]: Without dead ends: 42 [2020-11-30 00:19:07,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=337, Invalid=1901, Unknown=18, NotChecked=0, Total=2256 [2020-11-30 00:19:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-30 00:19:07,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-11-30 00:19:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:19:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-30 00:19:07,015 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-11-30 00:19:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:07,015 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-30 00:19:07,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-30 00:19:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-30 00:19:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 00:19:07,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:07,016 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2020-11-30 00:19:07,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:07,217 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:19:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 7 times [2020-11-30 00:19:07,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:07,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584566756] [2020-11-30 00:19:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:07,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584566756] [2020-11-30 00:19:07,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905746965] [2020-11-30 00:19:07,530 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/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 [2020-11-30 00:19:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:07,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 00:19:07,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:08,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:08,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2020-11-30 00:19:08,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889914771] [2020-11-30 00:19:08,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-30 00:19:08,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-30 00:19:08,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2020-11-30 00:19:08,284 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 32 states. [2020-11-30 00:19:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:09,335 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-30 00:19:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:19:09,336 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2020-11-30 00:19:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:09,337 INFO L225 Difference]: With dead ends: 50 [2020-11-30 00:19:09,337 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:19:09,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=288, Invalid=1874, Unknown=0, NotChecked=0, Total=2162 [2020-11-30 00:19:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:19:09,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-11-30 00:19:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 00:19:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-11-30 00:19:09,351 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2020-11-30 00:19:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:09,354 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-11-30 00:19:09,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-30 00:19:09,354 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-11-30 00:19:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-30 00:19:09,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:09,355 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2020-11-30 00:19:09,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:09,556 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:19:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2138891355, now seen corresponding path program 8 times [2020-11-30 00:19:09,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:09,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674510435] [2020-11-30 00:19:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:09,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674510435] [2020-11-30 00:19:09,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505173634] [2020-11-30 00:19:09,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:10,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:19:10,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:19:10,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-30 00:19:10,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:10,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:10,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2020-11-30 00:19:10,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398054088] [2020-11-30 00:19:10,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-30 00:19:10,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:10,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-30 00:19:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 00:19:10,760 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 36 states. [2020-11-30 00:19:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:11,923 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-11-30 00:19:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 00:19:11,923 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 45 [2020-11-30 00:19:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:11,924 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:19:11,924 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 00:19:11,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=418, Invalid=2444, Unknown=0, NotChecked=0, Total=2862 [2020-11-30 00:19:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 00:19:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-11-30 00:19:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:19:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-11-30 00:19:11,933 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2020-11-30 00:19:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:11,933 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-11-30 00:19:11,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-30 00:19:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-11-30 00:19:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-30 00:19:11,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:11,935 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1] [2020-11-30 00:19:12,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 00:19:12,140 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:19:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:12,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2002882959, now seen corresponding path program 9 times [2020-11-30 00:19:12,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:12,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611552919] [2020-11-30 00:19:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:12,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611552919] [2020-11-30 00:19:12,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745274707] [2020-11-30 00:19:12,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:12,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-30 00:19:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:19:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-30 00:19:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:16,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:16,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2020-11-30 00:19:16,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079655022] [2020-11-30 00:19:16,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-30 00:19:16,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:16,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-30 00:19:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1440, Unknown=3, NotChecked=0, Total=1560 [2020-11-30 00:19:16,796 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 40 states. [2020-11-30 00:19:17,699 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-11-30 00:19:19,839 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2020-11-30 00:19:20,061 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 26 [2020-11-30 00:19:21,339 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-11-30 00:19:25,844 WARN L193 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-11-30 00:19:30,159 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-11-30 00:19:32,374 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-11-30 00:19:32,926 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-11-30 00:19:33,504 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-11-30 00:19:37,251 WARN L193 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-11-30 00:19:43,696 WARN L193 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 45 [2020-11-30 00:19:50,142 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 46 [2020-11-30 00:19:53,913 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification that was a NOOP. DAG size: 41 [2020-11-30 00:19:56,149 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 38 [2020-11-30 00:19:58,310 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 39 [2020-11-30 00:20:01,932 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 00:20:04,063 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-11-30 00:20:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:04,126 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-11-30 00:20:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-30 00:20:04,126 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 50 [2020-11-30 00:20:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:04,127 INFO L225 Difference]: With dead ends: 58 [2020-11-30 00:20:04,127 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:20:04,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=480, Invalid=3549, Unknown=3, NotChecked=0, Total=4032 [2020-11-30 00:20:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:20:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-11-30 00:20:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 00:20:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-11-30 00:20:04,136 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2020-11-30 00:20:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:04,136 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-11-30 00:20:04,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-30 00:20:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-11-30 00:20:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-30 00:20:04,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:04,137 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2020-11-30 00:20:04,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-30 00:20:04,338 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:04,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 10 times [2020-11-30 00:20:04,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:04,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412553835] [2020-11-30 00:20:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:04,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412553835] [2020-11-30 00:20:04,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105656622] [2020-11-30 00:20:04,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:04,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:20:04,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:20:04,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-30 00:20:04,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:05,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:20:05,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2020-11-30 00:20:05,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323036776] [2020-11-30 00:20:05,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-30 00:20:05,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:05,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-30 00:20:05,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 00:20:05,885 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 44 states. [2020-11-30 00:20:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:07,510 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2020-11-30 00:20:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 00:20:07,511 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 55 [2020-11-30 00:20:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:07,511 INFO L225 Difference]: With dead ends: 65 [2020-11-30 00:20:07,512 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 00:20:07,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=480, Invalid=3680, Unknown=0, NotChecked=0, Total=4160 [2020-11-30 00:20:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 00:20:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-11-30 00:20:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 00:20:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-11-30 00:20:07,522 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2020-11-30 00:20:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:07,523 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-11-30 00:20:07,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-30 00:20:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-11-30 00:20:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 00:20:07,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:07,524 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1] [2020-11-30 00:20:07,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 00:20:07,740 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1824407281, now seen corresponding path program 11 times [2020-11-30 00:20:07,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:07,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855307682] [2020-11-30 00:20:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:08,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855307682] [2020-11-30 00:20:08,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281195006] [2020-11-30 00:20:08,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:08,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-30 00:20:08,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:20:08,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-30 00:20:08,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:09,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:20:09,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2020-11-30 00:20:09,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453328548] [2020-11-30 00:20:09,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-30 00:20:09,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:09,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-30 00:20:09,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2020-11-30 00:20:09,484 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 48 states. [2020-11-30 00:20:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:11,690 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-11-30 00:20:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-30 00:20:11,692 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 60 [2020-11-30 00:20:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:11,692 INFO L225 Difference]: With dead ends: 70 [2020-11-30 00:20:11,692 INFO L226 Difference]: Without dead ends: 69 [2020-11-30 00:20:11,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=603, Invalid=4367, Unknown=0, NotChecked=0, Total=4970 [2020-11-30 00:20:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-30 00:20:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-11-30 00:20:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 00:20:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2020-11-30 00:20:11,707 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2020-11-30 00:20:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:11,708 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2020-11-30 00:20:11,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-30 00:20:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2020-11-30 00:20:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-30 00:20:11,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:11,715 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1] [2020-11-30 00:20:11,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:11,928 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:11,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1150384805, now seen corresponding path program 12 times [2020-11-30 00:20:11,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:11,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550339543] [2020-11-30 00:20:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:12,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550339543] [2020-11-30 00:20:12,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813078871] [2020-11-30 00:20:12,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:12,574 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-30 00:20:12,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:20:12,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-30 00:20:12,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:16,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:20:16,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2020-11-30 00:20:16,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889811349] [2020-11-30 00:20:16,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-30 00:20:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-30 00:20:16,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2460, Unknown=2, NotChecked=0, Total=2652 [2020-11-30 00:20:16,223 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 52 states. [2020-11-30 00:20:16,668 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-11-30 00:20:17,570 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2020-11-30 00:20:18,150 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 46 [2020-11-30 00:20:18,604 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 42 [2020-11-30 00:20:19,463 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-11-30 00:20:20,024 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-11-30 00:20:21,292 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-11-30 00:20:23,390 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-11-30 00:20:24,399 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 00:20:25,806 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 42 [2020-11-30 00:20:26,723 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-11-30 00:20:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:27,025 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-11-30 00:20:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-30 00:20:27,026 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 65 [2020-11-30 00:20:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:27,027 INFO L225 Difference]: With dead ends: 75 [2020-11-30 00:20:27,027 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 00:20:27,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=751, Invalid=5889, Unknown=2, NotChecked=0, Total=6642 [2020-11-30 00:20:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 00:20:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-11-30 00:20:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-30 00:20:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-11-30 00:20:27,039 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2020-11-30 00:20:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:27,040 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-11-30 00:20:27,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-30 00:20:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-11-30 00:20:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-30 00:20:27,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:27,042 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1] [2020-11-30 00:20:27,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:27,256 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash 968060785, now seen corresponding path program 13 times [2020-11-30 00:20:27,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:27,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341700148] [2020-11-30 00:20:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:28,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341700148] [2020-11-30 00:20:28,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362404007] [2020-11-30 00:20:28,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:28,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-30 00:20:28,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:29,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:20:29,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2020-11-30 00:20:29,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895891939] [2020-11-30 00:20:29,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-30 00:20:29,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-30 00:20:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2788, Unknown=0, NotChecked=0, Total=3080 [2020-11-30 00:20:29,827 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 56 states. [2020-11-30 00:20:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:33,059 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2020-11-30 00:20:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-30 00:20:33,060 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 70 [2020-11-30 00:20:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:33,061 INFO L225 Difference]: With dead ends: 80 [2020-11-30 00:20:33,061 INFO L226 Difference]: Without dead ends: 79 [2020-11-30 00:20:33,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=717, Invalid=6089, Unknown=0, NotChecked=0, Total=6806 [2020-11-30 00:20:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-30 00:20:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-11-30 00:20:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 00:20:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-11-30 00:20:33,071 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2020-11-30 00:20:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:33,071 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-11-30 00:20:33,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-30 00:20:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-11-30 00:20:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-30 00:20:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:33,073 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2020-11-30 00:20:33,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:33,280 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash 197564965, now seen corresponding path program 14 times [2020-11-30 00:20:33,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:33,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788795965] [2020-11-30 00:20:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:34,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788795965] [2020-11-30 00:20:34,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30250383] [2020-11-30 00:20:34,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:34,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:20:34,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:20:34,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-30 00:20:34,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:36,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:20:36,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2020-11-30 00:20:36,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038609139] [2020-11-30 00:20:36,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-30 00:20:36,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-30 00:20:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3189, Unknown=0, NotChecked=0, Total=3540 [2020-11-30 00:20:36,723 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 60 states. [2020-11-30 00:20:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:40,716 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-11-30 00:20:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-30 00:20:40,717 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 75 [2020-11-30 00:20:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:40,718 INFO L225 Difference]: With dead ends: 85 [2020-11-30 00:20:40,718 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 00:20:40,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=913, Invalid=7097, Unknown=0, NotChecked=0, Total=8010 [2020-11-30 00:20:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 00:20:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-11-30 00:20:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-30 00:20:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-11-30 00:20:40,729 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2020-11-30 00:20:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:40,729 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-11-30 00:20:40,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-30 00:20:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-11-30 00:20:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 00:20:40,730 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:40,730 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2020-11-30 00:20:40,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-30 00:20:40,939 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 15 times [2020-11-30 00:20:40,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:40,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347318391] [2020-11-30 00:20:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:41,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347318391] [2020-11-30 00:20:41,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422155002] [2020-11-30 00:20:41,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_601b1a59-1d0f-4e63-a48e-2c2a31e1cb88/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:42,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-30 00:20:42,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:20:42,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-30 00:20:42,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:21:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 486 refuted. 69 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:21:49,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:21:49,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2020-11-30 00:21:49,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074397943] [2020-11-30 00:21:49,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-30 00:21:49,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:21:49,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-30 00:21:49,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=3830, Unknown=40, NotChecked=0, Total=4032 [2020-11-30 00:21:49,052 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 64 states. [2020-11-30 00:22:10,052 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 30 [2020-11-30 00:22:23,702 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 23 [2020-11-30 00:22:45,230 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 32 [2020-11-30 00:23:06,017 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 22 [2020-11-30 00:23:40,436 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 34 [2020-11-30 00:24:04,783 WARN L193 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2020-11-30 00:24:43,286 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 108 DAG size of output: 47 [2020-11-30 00:25:22,743 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-11-30 00:25:50,601 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 92 DAG size of output: 30 [2020-11-30 00:27:16,861 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 00:27:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:27:17,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-30 00:27:17,063 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) 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:233) 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:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) 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:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-11-30 00:27:17,069 INFO L168 Benchmark]: Toolchain (without parser) took 549676.27 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 69.9 MB in the beginning and 83.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:27:17,069 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:27:17,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.03 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 74.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:27:17,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.18 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:27:17,070 INFO L168 Benchmark]: Boogie Preprocessor took 43.35 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:27:17,071 INFO L168 Benchmark]: RCFGBuilder took 389.13 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 60.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:27:17,071 INFO L168 Benchmark]: TraceAbstraction took 548812.67 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 60.1 MB in the beginning and 83.1 MB in the end (delta: -23.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:27:17,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.03 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 74.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.18 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.35 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.13 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 60.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 548812.67 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 60.1 MB in the beginning and 83.1 MB in the end (delta: -23.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...