./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 64bit --witnessprinter.graph.data.programhash d28857c86a3c83fc75b1b8cf8125f1c52a370911 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:41:17,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:41:17,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:41:17,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:41:17,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:41:17,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:41:17,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:41:17,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:41:17,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:41:17,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:41:17,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:41:17,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:41:17,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:41:17,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:41:17,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:41:17,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:41:17,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:41:17,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:41:17,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:41:17,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:41:17,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:41:17,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:41:17,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:41:17,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:41:17,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:41:17,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:41:17,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:41:17,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:41:17,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:41:17,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:41:17,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:41:17,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:41:17,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:41:17,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:41:17,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:41:17,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:41:17,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:41:17,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:41:17,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:41:17,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:41:17,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:41:17,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 19:41:17,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:41:17,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:41:17,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:41:17,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:41:17,733 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:41:17,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:41:17,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:41:17,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:41:17,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:41:17,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:41:17,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:41:17,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:41:17,736 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:41:17,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:41:17,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:41:17,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:41:17,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:41:17,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:41:17,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:41:17,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:41:17,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:41:17,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:41:17,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:41:17,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:41:17,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:41:17,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:41:17,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:41:17,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:41:17,753 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_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2020-11-29 19:41:18,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:41:18,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:41:18,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:41:18,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:41:18,088 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:41:18,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-11-29 19:41:18,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/data/47db94e27/9ace49e717e043c4b1605c3b4070e73b/FLAGca99e8aa1 [2020-11-29 19:41:18,832 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:41:18,833 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-11-29 19:41:18,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/data/47db94e27/9ace49e717e043c4b1605c3b4070e73b/FLAGca99e8aa1 [2020-11-29 19:41:19,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/data/47db94e27/9ace49e717e043c4b1605c3b4070e73b [2020-11-29 19:41:19,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:41:19,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:41:19,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:19,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:41:19,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:41:19,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c0eea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19, skipping insertion in model container [2020-11-29 19:41:19,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:41:19,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:41:19,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:19,505 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:41:19,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:19,539 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:41:19,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19 WrapperNode [2020-11-29 19:41:19,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:19,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:19,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:41:19,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:41:19,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:19,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:41:19,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:41:19,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:41:19,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... [2020-11-29 19:41:19,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:41:19,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:41:19,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:41:19,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:41:19,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:41:19,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:41:19,953 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:41:19,954 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 19:41:19,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:19 BoogieIcfgContainer [2020-11-29 19:41:19,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:41:19,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:41:19,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:41:19,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:41:19,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:41:19" (1/3) ... [2020-11-29 19:41:19,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1fb14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:41:19, skipping insertion in model container [2020-11-29 19:41:19,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:19" (2/3) ... [2020-11-29 19:41:19,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1fb14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:41:19, skipping insertion in model container [2020-11-29 19:41:19,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:19" (3/3) ... [2020-11-29 19:41:19,969 INFO L111 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2020-11-29 19:41:19,983 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:41:19,988 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 19:41:20,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 19:41:20,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:41:20,042 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:41:20,042 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:41:20,043 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:41:20,043 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:41:20,043 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:41:20,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:41:20,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:41:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 19:41:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 19:41:20,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:20,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-29 19:41:20,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:20,083 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-29 19:41:20,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:20,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051541253] [2020-11-29 19:41:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:20,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051541253] [2020-11-29 19:41:20,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:20,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:41:20,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228051595] [2020-11-29 19:41:20,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:20,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:20,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:20,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:20,502 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-11-29 19:41:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:20,584 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-29 19:41:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:20,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-29 19:41:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:20,598 INFO L225 Difference]: With dead ends: 20 [2020-11-29 19:41:20,598 INFO L226 Difference]: Without dead ends: 8 [2020-11-29 19:41:20,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-29 19:41:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 19:41:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 19:41:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-29 19:41:20,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-11-29 19:41:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:20,656 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-29 19:41:20,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-29 19:41:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:41:20,657 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:20,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 19:41:20,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:41:20,659 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:20,662 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-29 19:41:20,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:20,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999834883] [2020-11-29 19:41:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:20,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999834883] [2020-11-29 19:41:20,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:20,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:41:20,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072448905] [2020-11-29 19:41:20,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:20,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:20,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:20,734 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-11-29 19:41:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:20,795 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-29 19:41:20,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:41:20,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-29 19:41:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:20,796 INFO L225 Difference]: With dead ends: 15 [2020-11-29 19:41:20,796 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 19:41:20,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:41:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 19:41:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-11-29 19:41:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:41:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 19:41:20,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2020-11-29 19:41:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:20,802 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 19:41:20,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 19:41:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:41:20,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:20,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:41:20,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:41:20,804 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:20,804 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-29 19:41:20,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:20,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132750230] [2020-11-29 19:41:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:20,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132750230] [2020-11-29 19:41:20,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:20,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:41:20,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23254565] [2020-11-29 19:41:20,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:41:20,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:20,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:41:20,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:41:20,876 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-29 19:41:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:20,908 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-29 19:41:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:41:20,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 19:41:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:20,911 INFO L225 Difference]: With dead ends: 12 [2020-11-29 19:41:20,911 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 19:41:20,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:41:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 19:41:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 19:41:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 19:41:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 19:41:20,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-11-29 19:41:20,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:20,916 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 19:41:20,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:41:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 19:41:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:41:20,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:20,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-29 19:41:20,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:41:20,917 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-11-29 19:41:20,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:20,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743920524] [2020-11-29 19:41:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:21,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743920524] [2020-11-29 19:41:21,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906475639] [2020-11-29 19:41:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:21,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:41:21,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:21,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:21,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 19:41:21,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378762292] [2020-11-29 19:41:21,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:41:21,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:21,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:41:21,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:41:21,142 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-11-29 19:41:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:21,235 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 19:41:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:41:21,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 19:41:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:21,238 INFO L225 Difference]: With dead ends: 18 [2020-11-29 19:41:21,238 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 19:41:21,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:41:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 19:41:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-29 19:41:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:41:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 19:41:21,243 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2020-11-29 19:41:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:21,244 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 19:41:21,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:41:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 19:41:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:41:21,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:21,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-11-29 19:41:21,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:21,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:21,449 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-11-29 19:41:21,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:21,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92370887] [2020-11-29 19:41:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:21,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92370887] [2020-11-29 19:41:21,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567368173] [2020-11-29 19:41:21,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:21,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:41:21,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:21,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:41:21,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:21,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:21,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 19:41:21,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307600574] [2020-11-29 19:41:21,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:41:21,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:21,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:41:21,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:41:21,772 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-11-29 19:41:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:21,874 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-29 19:41:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:41:21,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 19:41:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:21,876 INFO L225 Difference]: With dead ends: 23 [2020-11-29 19:41:21,876 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 19:41:21,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:41:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 19:41:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-29 19:41:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 19:41:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-29 19:41:21,882 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2020-11-29 19:41:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:21,882 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-29 19:41:21,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:41:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-29 19:41:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:41:21,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:21,884 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-11-29 19:41:22,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:22,100 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2020-11-29 19:41:22,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:22,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843605998] [2020-11-29 19:41:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:22,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843605998] [2020-11-29 19:41:22,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963646680] [2020-11-29 19:41:22,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:22,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 19:41:22,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:22,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:41:22,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:22,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:22,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-29 19:41:22,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478965830] [2020-11-29 19:41:22,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:41:22,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:22,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:41:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:41:22,432 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2020-11-29 19:41:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:22,571 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-29 19:41:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:41:22,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-29 19:41:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:22,572 INFO L225 Difference]: With dead ends: 28 [2020-11-29 19:41:22,573 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 19:41:22,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:41:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 19:41:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-29 19:41:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 19:41:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-29 19:41:22,578 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-11-29 19:41:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:22,579 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-29 19:41:22,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:41:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-29 19:41:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:41:22,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:22,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-11-29 19:41:22,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:22,797 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:22,798 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2020-11-29 19:41:22,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:22,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060650066] [2020-11-29 19:41:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060650066] [2020-11-29 19:41:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445924971] [2020-11-29 19:41:23,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:23,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:41:23,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:23,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:41:23,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:23,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:23,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-29 19:41:23,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921948926] [2020-11-29 19:41:23,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:41:23,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:41:23,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:41:23,308 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2020-11-29 19:41:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:23,490 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-11-29 19:41:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:41:23,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-11-29 19:41:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:23,492 INFO L225 Difference]: With dead ends: 33 [2020-11-29 19:41:23,493 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 19:41:23,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:41:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 19:41:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-29 19:41:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 19:41:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-29 19:41:23,499 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-11-29 19:41:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:23,499 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-29 19:41:23,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:41:23,499 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-29 19:41:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 19:41:23,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:23,504 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-11-29 19:41:23,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:23,705 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:23,706 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2020-11-29 19:41:23,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:23,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684191606] [2020-11-29 19:41:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:23,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684191606] [2020-11-29 19:41:23,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928201563] [2020-11-29 19:41:23,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:23,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 19:41:23,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:23,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:41:23,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:24,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:24,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-29 19:41:24,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403596598] [2020-11-29 19:41:24,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:41:24,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:41:24,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:41:24,016 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2020-11-29 19:41:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:24,191 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-11-29 19:41:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 19:41:24,192 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-11-29 19:41:24,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:24,193 INFO L225 Difference]: With dead ends: 38 [2020-11-29 19:41:24,193 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 19:41:24,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:41:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 19:41:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-29 19:41:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:41:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-29 19:41:24,200 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-11-29 19:41:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:24,201 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-29 19:41:24,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:41:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-29 19:41:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:41:24,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:24,202 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2020-11-29 19:41:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:24,428 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2020-11-29 19:41:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:24,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664100268] [2020-11-29 19:41:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:24,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664100268] [2020-11-29 19:41:24,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249406623] [2020-11-29 19:41:24,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:24,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 19:41:24,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:24,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 19:41:24,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:24,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:24,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-29 19:41:24,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086849339] [2020-11-29 19:41:24,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 19:41:24,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:24,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 19:41:24,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:41:24,774 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2020-11-29 19:41:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:24,969 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-11-29 19:41:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 19:41:24,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2020-11-29 19:41:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:24,976 INFO L225 Difference]: With dead ends: 43 [2020-11-29 19:41:24,976 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 19:41:24,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-11-29 19:41:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 19:41:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-11-29 19:41:24,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 19:41:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-29 19:41:24,982 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-11-29 19:41:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:24,983 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-29 19:41:24,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 19:41:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-29 19:41:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 19:41:24,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:24,994 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2020-11-29 19:41:25,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:25,195 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2020-11-29 19:41:25,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:25,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397368045] [2020-11-29 19:41:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:25,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397368045] [2020-11-29 19:41:25,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681521741] [2020-11-29 19:41:25,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:25,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:41:25,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:25,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:25,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-11-29 19:41:25,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334655823] [2020-11-29 19:41:25,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 19:41:25,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:25,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 19:41:25,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:41:25,582 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2020-11-29 19:41:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:25,858 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-11-29 19:41:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 19:41:25,859 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-11-29 19:41:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:25,860 INFO L225 Difference]: With dead ends: 48 [2020-11-29 19:41:25,860 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 19:41:25,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2020-11-29 19:41:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 19:41:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-11-29 19:41:25,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 19:41:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-11-29 19:41:25,867 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2020-11-29 19:41:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:25,867 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-11-29 19:41:25,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 19:41:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-11-29 19:41:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:41:25,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:25,876 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2020-11-29 19:41:26,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 19:41:26,077 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:26,077 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2020-11-29 19:41:26,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:26,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506687188] [2020-11-29 19:41:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:26,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506687188] [2020-11-29 19:41:26,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078879777] [2020-11-29 19:41:26,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:26,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:41:26,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:26,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 19:41:26,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:26,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:26,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-29 19:41:26,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092821975] [2020-11-29 19:41:26,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 19:41:26,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 19:41:26,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:41:26,555 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 20 states. [2020-11-29 19:41:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:26,821 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-11-29 19:41:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:41:26,822 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2020-11-29 19:41:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:26,822 INFO L225 Difference]: With dead ends: 53 [2020-11-29 19:41:26,823 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:41:26,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2020-11-29 19:41:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:41:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-29 19:41:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 19:41:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-11-29 19:41:26,830 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2020-11-29 19:41:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:26,831 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-11-29 19:41:26,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 19:41:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-11-29 19:41:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 19:41:26,832 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:26,833 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2020-11-29 19:41:27,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 19:41:27,052 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:27,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2020-11-29 19:41:27,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:27,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343555977] [2020-11-29 19:41:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:27,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343555977] [2020-11-29 19:41:27,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005430529] [2020-11-29 19:41:27,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:27,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-29 19:41:27,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:27,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 19:41:27,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:27,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:27,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-11-29 19:41:27,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501109387] [2020-11-29 19:41:27,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 19:41:27,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 19:41:27,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:41:27,536 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 22 states. [2020-11-29 19:41:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:27,866 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-11-29 19:41:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 19:41:27,867 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-11-29 19:41:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:27,868 INFO L225 Difference]: With dead ends: 58 [2020-11-29 19:41:27,868 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 19:41:27,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2020-11-29 19:41:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 19:41:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-11-29 19:41:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 19:41:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-11-29 19:41:27,875 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2020-11-29 19:41:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:27,876 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-11-29 19:41:27,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 19:41:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-11-29 19:41:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-29 19:41:27,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:27,877 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-11-29 19:41:28,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:28,078 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:28,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2020-11-29 19:41:28,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:28,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980224323] [2020-11-29 19:41:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:28,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980224323] [2020-11-29 19:41:28,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128326753] [2020-11-29 19:41:28,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:28,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:41:28,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:28,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 19:41:28,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:28,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:28,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-29 19:41:28,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711417362] [2020-11-29 19:41:28,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 19:41:28,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:28,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 19:41:28,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:41:28,649 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 24 states. [2020-11-29 19:41:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:28,897 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-11-29 19:41:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 19:41:28,898 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-11-29 19:41:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:28,899 INFO L225 Difference]: With dead ends: 63 [2020-11-29 19:41:28,899 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 19:41:28,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 19:41:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 19:41:28,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-11-29 19:41:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 19:41:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-11-29 19:41:28,907 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2020-11-29 19:41:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:28,907 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-11-29 19:41:28,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 19:41:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-11-29 19:41:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 19:41:28,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:28,908 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-11-29 19:41:29,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:29,129 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:29,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2020-11-29 19:41:29,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:29,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22003976] [2020-11-29 19:41:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:29,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22003976] [2020-11-29 19:41:29,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308057606] [2020-11-29 19:41:29,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:29,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-29 19:41:29,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:29,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 19:41:29,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:29,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:29,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-11-29 19:41:29,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398970133] [2020-11-29 19:41:29,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-29 19:41:29,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:29,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-29 19:41:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2020-11-29 19:41:29,749 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2020-11-29 19:41:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:30,081 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-29 19:41:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 19:41:30,082 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2020-11-29 19:41:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:30,082 INFO L225 Difference]: With dead ends: 68 [2020-11-29 19:41:30,082 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 19:41:30,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:41:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 19:41:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-11-29 19:41:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 19:41:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2020-11-29 19:41:30,088 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2020-11-29 19:41:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:30,089 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2020-11-29 19:41:30,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-29 19:41:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2020-11-29 19:41:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 19:41:30,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:30,090 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2020-11-29 19:41:30,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:41:30,304 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:30,305 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2020-11-29 19:41:30,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:30,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637702097] [2020-11-29 19:41:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:30,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637702097] [2020-11-29 19:41:30,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580498812] [2020-11-29 19:41:30,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:30,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 19:41:30,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:30,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 19:41:30,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:30,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:30,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-11-29 19:41:30,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949969848] [2020-11-29 19:41:30,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 19:41:30,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 19:41:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:41:30,796 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 28 states. [2020-11-29 19:41:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:31,160 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-11-29 19:41:31,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 19:41:31,160 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2020-11-29 19:41:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:31,161 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:41:31,161 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 19:41:31,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2020-11-29 19:41:31,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 19:41:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-11-29 19:41:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 19:41:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-11-29 19:41:31,170 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2020-11-29 19:41:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:31,170 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-11-29 19:41:31,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 19:41:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-11-29 19:41:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-29 19:41:31,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:31,171 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2020-11-29 19:41:31,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 19:41:31,380 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2020-11-29 19:41:31,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:31,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123547957] [2020-11-29 19:41:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:31,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123547957] [2020-11-29 19:41:31,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652624145] [2020-11-29 19:41:31,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:31,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 19:41:31,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:31,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:31,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-29 19:41:31,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632340546] [2020-11-29 19:41:31,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-29 19:41:31,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-29 19:41:31,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2020-11-29 19:41:31,955 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 30 states. [2020-11-29 19:41:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:32,377 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-11-29 19:41:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-29 19:41:32,377 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-11-29 19:41:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:32,378 INFO L225 Difference]: With dead ends: 78 [2020-11-29 19:41:32,378 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 19:41:32,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 19:41:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 19:41:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-11-29 19:41:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-29 19:41:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-11-29 19:41:32,384 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2020-11-29 19:41:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:32,384 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-11-29 19:41:32,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-29 19:41:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-11-29 19:41:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 19:41:32,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:32,385 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2020-11-29 19:41:32,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 19:41:32,596 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2020-11-29 19:41:32,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:32,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422782616] [2020-11-29 19:41:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:33,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422782616] [2020-11-29 19:41:33,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218270191] [2020-11-29 19:41:33,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:33,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:41:33,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:33,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-29 19:41:33,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:33,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:33,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-29 19:41:33,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479359088] [2020-11-29 19:41:33,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-29 19:41:33,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:33,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 19:41:33,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2020-11-29 19:41:33,380 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 32 states. [2020-11-29 19:41:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:33,846 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-11-29 19:41:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-29 19:41:33,847 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2020-11-29 19:41:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:33,848 INFO L225 Difference]: With dead ends: 83 [2020-11-29 19:41:33,848 INFO L226 Difference]: Without dead ends: 82 [2020-11-29 19:41:33,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 19:41:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-29 19:41:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-11-29 19:41:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 19:41:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-11-29 19:41:33,855 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2020-11-29 19:41:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:33,856 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-11-29 19:41:33,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-29 19:41:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-11-29 19:41:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 19:41:33,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:33,857 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2020-11-29 19:41:34,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:34,072 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2020-11-29 19:41:34,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:34,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197379136] [2020-11-29 19:41:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:34,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197379136] [2020-11-29 19:41:34,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398185132] [2020-11-29 19:41:34,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:34,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-29 19:41:34,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:34,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 19:41:34,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:34,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:34,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2020-11-29 19:41:34,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806696256] [2020-11-29 19:41:34,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-29 19:41:34,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-29 19:41:34,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 19:41:34,936 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 34 states. [2020-11-29 19:41:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:35,401 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-11-29 19:41:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-29 19:41:35,401 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 80 [2020-11-29 19:41:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:35,402 INFO L225 Difference]: With dead ends: 88 [2020-11-29 19:41:35,402 INFO L226 Difference]: Without dead ends: 87 [2020-11-29 19:41:35,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 19:41:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-29 19:41:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-11-29 19:41:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 19:41:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-11-29 19:41:35,408 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2020-11-29 19:41:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:35,408 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-11-29 19:41:35,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-29 19:41:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-11-29 19:41:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:41:35,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:35,409 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2020-11-29 19:41:35,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 19:41:35,624 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2020-11-29 19:41:35,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:35,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388180823] [2020-11-29 19:41:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:36,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388180823] [2020-11-29 19:41:36,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509148447] [2020-11-29 19:41:36,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:36,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:41:36,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:36,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 19:41:36,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:36,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:36,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2020-11-29 19:41:36,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929132902] [2020-11-29 19:41:36,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-29 19:41:36,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:36,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 19:41:36,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 19:41:36,570 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 36 states. [2020-11-29 19:41:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:37,052 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2020-11-29 19:41:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-29 19:41:37,052 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 85 [2020-11-29 19:41:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:37,053 INFO L225 Difference]: With dead ends: 93 [2020-11-29 19:41:37,053 INFO L226 Difference]: Without dead ends: 92 [2020-11-29 19:41:37,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 19:41:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-29 19:41:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-11-29 19:41:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 19:41:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-11-29 19:41:37,057 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2020-11-29 19:41:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:37,058 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-11-29 19:41:37,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-29 19:41:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-11-29 19:41:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 19:41:37,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:37,059 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2020-11-29 19:41:37,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:37,268 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2020-11-29 19:41:37,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:37,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120280373] [2020-11-29 19:41:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:38,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120280373] [2020-11-29 19:41:38,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574207287] [2020-11-29 19:41:38,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:38,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 19:41:38,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 19:41:38,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:38,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2020-11-29 19:41:38,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484365996] [2020-11-29 19:41:38,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 19:41:38,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:38,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 19:41:38,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:41:38,193 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 38 states. [2020-11-29 19:41:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:38,752 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-11-29 19:41:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 19:41:38,753 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 90 [2020-11-29 19:41:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:38,754 INFO L225 Difference]: With dead ends: 98 [2020-11-29 19:41:38,754 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 19:41:38,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2020-11-29 19:41:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 19:41:38,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-11-29 19:41:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 19:41:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2020-11-29 19:41:38,768 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2020-11-29 19:41:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:38,771 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2020-11-29 19:41:38,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 19:41:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2020-11-29 19:41:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-29 19:41:38,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:38,775 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2020-11-29 19:41:38,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:38,988 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2020-11-29 19:41:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:38,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177741890] [2020-11-29 19:41:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:39,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177741890] [2020-11-29 19:41:39,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017811053] [2020-11-29 19:41:39,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/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 [2020-11-29 19:41:40,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 19:41:40,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:40,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-29 19:41:40,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:40,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:40,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2020-11-29 19:41:40,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371628706] [2020-11-29 19:41:40,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-29 19:41:40,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:40,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-29 19:41:40,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 19:41:40,080 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 40 states. [2020-11-29 19:41:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:40,738 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-11-29 19:41:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-29 19:41:40,739 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 95 [2020-11-29 19:41:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:40,740 INFO L225 Difference]: With dead ends: 103 [2020-11-29 19:41:40,740 INFO L226 Difference]: Without dead ends: 102 [2020-11-29 19:41:40,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2020-11-29 19:41:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-29 19:41:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-11-29 19:41:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 19:41:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2020-11-29 19:41:40,747 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2020-11-29 19:41:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:40,748 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2020-11-29 19:41:40,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-29 19:41:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2020-11-29 19:41:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:41:40,750 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:40,750 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2020-11-29 19:41:40,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 19:41:40,964 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:40,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2020-11-29 19:41:40,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:40,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742312443] [2020-11-29 19:41:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:41,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742312443] [2020-11-29 19:41:41,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657586795] [2020-11-29 19:41:41,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:41,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 19:41:41,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:42,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:42,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2020-11-29 19:41:42,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651148161] [2020-11-29 19:41:42,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-29 19:41:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:42,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-29 19:41:42,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 19:41:42,007 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 42 states. [2020-11-29 19:41:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:42,521 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-11-29 19:41:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-29 19:41:42,524 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 100 [2020-11-29 19:41:42,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:42,525 INFO L225 Difference]: With dead ends: 108 [2020-11-29 19:41:42,525 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 19:41:42,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2020-11-29 19:41:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 19:41:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-11-29 19:41:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 19:41:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2020-11-29 19:41:42,531 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2020-11-29 19:41:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:42,532 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2020-11-29 19:41:42,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-29 19:41:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2020-11-29 19:41:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-29 19:41:42,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:42,534 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1] [2020-11-29 19:41:42,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:42,736 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:42,737 INFO L82 PathProgramCache]: Analyzing trace with hash -119266781, now seen corresponding path program 20 times [2020-11-29 19:41:42,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:42,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721194255] [2020-11-29 19:41:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:43,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721194255] [2020-11-29 19:41:43,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359408362] [2020-11-29 19:41:43,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:44,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:41:44,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:44,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 19:41:44,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:44,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:44,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2020-11-29 19:41:44,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714107553] [2020-11-29 19:41:44,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-29 19:41:44,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-29 19:41:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 19:41:44,070 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 44 states. [2020-11-29 19:41:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:44,711 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2020-11-29 19:41:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 19:41:44,711 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2020-11-29 19:41:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:44,712 INFO L225 Difference]: With dead ends: 113 [2020-11-29 19:41:44,712 INFO L226 Difference]: Without dead ends: 112 [2020-11-29 19:41:44,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2020-11-29 19:41:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-29 19:41:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-11-29 19:41:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-29 19:41:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2020-11-29 19:41:44,719 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2020-11-29 19:41:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:44,719 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2020-11-29 19:41:44,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-29 19:41:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2020-11-29 19:41:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-11-29 19:41:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:44,721 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1] [2020-11-29 19:41:44,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 19:41:44,936 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash 953284081, now seen corresponding path program 21 times [2020-11-29 19:41:44,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:44,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746410651] [2020-11-29 19:41:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:46,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746410651] [2020-11-29 19:41:46,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097818727] [2020-11-29 19:41:46,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:46,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-29 19:41:46,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:46,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-29 19:41:46,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:46,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:46,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2020-11-29 19:41:46,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496555574] [2020-11-29 19:41:46,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-29 19:41:46,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:46,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-29 19:41:46,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 19:41:46,630 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 46 states. [2020-11-29 19:41:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:47,403 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2020-11-29 19:41:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-29 19:41:47,403 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2020-11-29 19:41:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:47,404 INFO L225 Difference]: With dead ends: 118 [2020-11-29 19:41:47,404 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 19:41:47,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2020-11-29 19:41:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 19:41:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-11-29 19:41:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 19:41:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2020-11-29 19:41:47,410 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2020-11-29 19:41:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:47,411 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2020-11-29 19:41:47,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-29 19:41:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2020-11-29 19:41:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-29 19:41:47,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:47,413 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2020-11-29 19:41:47,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 19:41:47,624 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 22 times [2020-11-29 19:41:47,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:47,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150897985] [2020-11-29 19:41:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:48,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150897985] [2020-11-29 19:41:48,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308662223] [2020-11-29 19:41:48,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:49,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:41:49,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:49,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 19:41:49,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:49,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:49,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2020-11-29 19:41:49,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688914813] [2020-11-29 19:41:49,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-29 19:41:49,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-29 19:41:49,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 19:41:49,119 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 48 states. [2020-11-29 19:41:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:50,011 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2020-11-29 19:41:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-29 19:41:50,011 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2020-11-29 19:41:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:50,013 INFO L225 Difference]: With dead ends: 123 [2020-11-29 19:41:50,013 INFO L226 Difference]: Without dead ends: 122 [2020-11-29 19:41:50,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2020-11-29 19:41:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-29 19:41:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-11-29 19:41:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 19:41:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2020-11-29 19:41:50,022 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2020-11-29 19:41:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:50,022 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2020-11-29 19:41:50,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-29 19:41:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2020-11-29 19:41:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-29 19:41:50,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:50,024 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1] [2020-11-29 19:41:50,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:50,244 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1642054351, now seen corresponding path program 23 times [2020-11-29 19:41:50,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:50,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968947845] [2020-11-29 19:41:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:51,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968947845] [2020-11-29 19:41:51,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689060265] [2020-11-29 19:41:51,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:52,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-29 19:41:52,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:52,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-29 19:41:52,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:52,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:52,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2020-11-29 19:41:52,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451029076] [2020-11-29 19:41:52,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-29 19:41:52,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:52,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-29 19:41:52,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 19:41:52,346 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 50 states. [2020-11-29 19:41:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:53,192 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2020-11-29 19:41:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-29 19:41:53,193 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 120 [2020-11-29 19:41:53,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:53,194 INFO L225 Difference]: With dead ends: 128 [2020-11-29 19:41:53,194 INFO L226 Difference]: Without dead ends: 127 [2020-11-29 19:41:53,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 19:41:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-29 19:41:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-11-29 19:41:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-29 19:41:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2020-11-29 19:41:53,201 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2020-11-29 19:41:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:53,201 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2020-11-29 19:41:53,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-29 19:41:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2020-11-29 19:41:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 19:41:53,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:53,204 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1] [2020-11-29 19:41:53,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-29 19:41:53,416 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1546480733, now seen corresponding path program 24 times [2020-11-29 19:41:53,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:53,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343615019] [2020-11-29 19:41:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:55,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343615019] [2020-11-29 19:41:55,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489316786] [2020-11-29 19:41:55,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:55,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-29 19:41:55,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:41:55,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2020-11-29 19:41:55,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:55,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:55,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2020-11-29 19:41:55,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268259919] [2020-11-29 19:41:55,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 19:41:55,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 19:41:55,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:41:55,525 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 52 states. [2020-11-29 19:41:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:56,431 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2020-11-29 19:41:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-29 19:41:56,431 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 125 [2020-11-29 19:41:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:56,432 INFO L225 Difference]: With dead ends: 133 [2020-11-29 19:41:56,432 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 19:41:56,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2020-11-29 19:41:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 19:41:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-11-29 19:41:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-29 19:41:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-11-29 19:41:56,439 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2020-11-29 19:41:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:56,440 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-11-29 19:41:56,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 19:41:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-11-29 19:41:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-29 19:41:56,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:56,442 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1] [2020-11-29 19:41:56,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:56,656 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:56,657 INFO L82 PathProgramCache]: Analyzing trace with hash -525437839, now seen corresponding path program 25 times [2020-11-29 19:41:56,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:56,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930421675] [2020-11-29 19:41:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:58,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930421675] [2020-11-29 19:41:58,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52966500] [2020-11-29 19:41:58,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:41:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:58,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-29 19:41:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:58,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:41:58,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2020-11-29 19:41:58,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273551268] [2020-11-29 19:41:58,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-29 19:41:58,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:58,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-29 19:41:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 19:41:58,463 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 54 states. [2020-11-29 19:41:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:59,514 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2020-11-29 19:41:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-29 19:41:59,514 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 130 [2020-11-29 19:41:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:41:59,515 INFO L225 Difference]: With dead ends: 138 [2020-11-29 19:41:59,515 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 19:41:59,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2020-11-29 19:41:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 19:41:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-11-29 19:41:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 19:41:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2020-11-29 19:41:59,521 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2020-11-29 19:41:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:41:59,522 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2020-11-29 19:41:59,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-29 19:41:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2020-11-29 19:41:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-29 19:41:59,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:41:59,523 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1] [2020-11-29 19:41:59,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-29 19:41:59,724 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:41:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:59,724 INFO L82 PathProgramCache]: Analyzing trace with hash 298116195, now seen corresponding path program 26 times [2020-11-29 19:41:59,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:59,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299985218] [2020-11-29 19:41:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:01,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299985218] [2020-11-29 19:42:01,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174163985] [2020-11-29 19:42:01,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:01,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:42:01,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:42:01,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 55 conjunts are in the unsatisfiable core [2020-11-29 19:42:01,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:01,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:42:01,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2020-11-29 19:42:01,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467812264] [2020-11-29 19:42:01,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-29 19:42:01,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-29 19:42:01,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2020-11-29 19:42:01,294 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 56 states. [2020-11-29 19:42:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:02,185 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2020-11-29 19:42:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-29 19:42:02,186 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 135 [2020-11-29 19:42:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:02,187 INFO L225 Difference]: With dead ends: 143 [2020-11-29 19:42:02,187 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 19:42:02,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2020-11-29 19:42:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 19:42:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-11-29 19:42:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:42:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2020-11-29 19:42:02,192 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2020-11-29 19:42:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:02,193 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2020-11-29 19:42:02,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-29 19:42:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2020-11-29 19:42:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-11-29 19:42:02,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:02,194 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1] [2020-11-29 19:42:02,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 19:42:02,416 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:42:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:02,417 INFO L82 PathProgramCache]: Analyzing trace with hash 626039729, now seen corresponding path program 27 times [2020-11-29 19:42:02,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:02,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199585298] [2020-11-29 19:42:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:04,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199585298] [2020-11-29 19:42:04,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075952176] [2020-11-29 19:42:04,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:04,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-11-29 19:42:04,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:42:04,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 57 conjunts are in the unsatisfiable core [2020-11-29 19:42:04,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:04,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:42:04,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2020-11-29 19:42:04,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178046154] [2020-11-29 19:42:04,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-29 19:42:04,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:04,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-29 19:42:04,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2020-11-29 19:42:04,494 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 58 states. [2020-11-29 19:42:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:05,847 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2020-11-29 19:42:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-29 19:42:05,848 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 140 [2020-11-29 19:42:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:05,849 INFO L225 Difference]: With dead ends: 148 [2020-11-29 19:42:05,849 INFO L226 Difference]: Without dead ends: 147 [2020-11-29 19:42:05,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2020-11-29 19:42:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-29 19:42:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-11-29 19:42:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:42:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2020-11-29 19:42:05,856 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2020-11-29 19:42:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:05,857 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2020-11-29 19:42:05,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-29 19:42:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2020-11-29 19:42:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-29 19:42:05,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:05,859 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1] [2020-11-29 19:42:06,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:06,072 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:42:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1553548579, now seen corresponding path program 28 times [2020-11-29 19:42:06,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:06,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490559114] [2020-11-29 19:42:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:07,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490559114] [2020-11-29 19:42:07,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598840806] [2020-11-29 19:42:07,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:07,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:42:07,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:42:07,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjunts are in the unsatisfiable core [2020-11-29 19:42:07,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:07,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:42:07,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2020-11-29 19:42:07,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020338146] [2020-11-29 19:42:07,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-29 19:42:07,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:07,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-29 19:42:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2020-11-29 19:42:07,975 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 60 states. [2020-11-29 19:42:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:09,202 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-11-29 19:42:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-29 19:42:09,202 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 145 [2020-11-29 19:42:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:09,203 INFO L225 Difference]: With dead ends: 153 [2020-11-29 19:42:09,203 INFO L226 Difference]: Without dead ends: 152 [2020-11-29 19:42:09,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2020-11-29 19:42:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-29 19:42:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-11-29 19:42:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-29 19:42:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2020-11-29 19:42:09,210 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2020-11-29 19:42:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:09,211 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2020-11-29 19:42:09,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-29 19:42:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2020-11-29 19:42:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-11-29 19:42:09,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:09,213 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1] [2020-11-29 19:42:09,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:09,428 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:42:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1747275023, now seen corresponding path program 29 times [2020-11-29 19:42:09,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:09,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083672117] [2020-11-29 19:42:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:11,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083672117] [2020-11-29 19:42:11,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438696217] [2020-11-29 19:42:11,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:11,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-11-29 19:42:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:42:11,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjunts are in the unsatisfiable core [2020-11-29 19:42:11,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:11,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:42:11,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2020-11-29 19:42:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331557557] [2020-11-29 19:42:11,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-29 19:42:11,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-29 19:42:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2020-11-29 19:42:11,942 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 62 states. [2020-11-29 19:42:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:13,335 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2020-11-29 19:42:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-29 19:42:13,335 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 150 [2020-11-29 19:42:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:13,337 INFO L225 Difference]: With dead ends: 158 [2020-11-29 19:42:13,337 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 19:42:13,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2020-11-29 19:42:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 19:42:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-11-29 19:42:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 19:42:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2020-11-29 19:42:13,344 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2020-11-29 19:42:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:13,345 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2020-11-29 19:42:13,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-29 19:42:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2020-11-29 19:42:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-29 19:42:13,346 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:13,347 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1] [2020-11-29 19:42:13,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-11-29 19:42:13,572 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:42:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1661225501, now seen corresponding path program 30 times [2020-11-29 19:42:13,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:13,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699942558] [2020-11-29 19:42:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:15,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699942558] [2020-11-29 19:42:15,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339962196] [2020-11-29 19:42:15,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:15,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-11-29 19:42:15,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:42:15,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 63 conjunts are in the unsatisfiable core [2020-11-29 19:42:15,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:15,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:42:15,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2020-11-29 19:42:15,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365552424] [2020-11-29 19:42:15,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-29 19:42:15,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:15,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-29 19:42:15,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2020-11-29 19:42:15,854 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 64 states. [2020-11-29 19:42:17,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:17,234 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2020-11-29 19:42:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-29 19:42:17,234 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 155 [2020-11-29 19:42:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:17,236 INFO L225 Difference]: With dead ends: 163 [2020-11-29 19:42:17,236 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 19:42:17,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2574, Invalid=6356, Unknown=0, NotChecked=0, Total=8930 [2020-11-29 19:42:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 19:42:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-11-29 19:42:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-29 19:42:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2020-11-29 19:42:17,242 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 155 [2020-11-29 19:42:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:17,243 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2020-11-29 19:42:17,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-29 19:42:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2020-11-29 19:42:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-29 19:42:17,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:17,244 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1] [2020-11-29 19:42:17,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:17,464 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:42:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1423918543, now seen corresponding path program 31 times [2020-11-29 19:42:17,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:17,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888026105] [2020-11-29 19:42:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 2446 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:42:22,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888026105] [2020-11-29 19:42:22,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:22,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2020-11-29 19:42:22,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396039732] [2020-11-29 19:42:22,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-29 19:42:22,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-29 19:42:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-11-29 19:42:22,050 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 63 states. [2020-11-29 19:42:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:22,441 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2020-11-29 19:42:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-29 19:42:22,442 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 160 [2020-11-29 19:42:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:22,443 INFO L225 Difference]: With dead ends: 161 [2020-11-29 19:42:22,443 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:42:22,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-11-29 19:42:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:42:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:42:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:42:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:42:22,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-11-29 19:42:22,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:22,446 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:42:22,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-11-29 19:42:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:42:22,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:42:22,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 19:42:22,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:42:22,571 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-11-29 19:42:23,213 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 155 [2020-11-29 19:42:23,220 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-11-29 19:42:23,220 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:42:23,220 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-11-29 19:42:23,221 INFO L270 CegarLoopResult]: At program point L19(lines 18 20) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2020-11-29 19:42:23,221 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-29 19:42:23,221 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-11-29 19:42:23,222 INFO L270 CegarLoopResult]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= ULTIMATE.start_mlog_~x 1048575) .cse0 (<= ULTIMATE.start_mlog_~res~0 11)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 9) (<= ULTIMATE.start_mlog_~x 4194303)) (and (<= ULTIMATE.start_mlog_~x 536870911) .cse0 (<= ULTIMATE.start_mlog_~res~0 2)) (and .cse0 (<= ULTIMATE.start_mlog_~x 8388607) (<= ULTIMATE.start_mlog_~res~0 8)) (and (<= ULTIMATE.start_mlog_~res~0 14) (<= ULTIMATE.start_mlog_~x 131071) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~x 67108863) (<= ULTIMATE.start_mlog_~res~0 5)) (and (<= ULTIMATE.start_mlog_~res~0 1) .cse0 (<= ULTIMATE.start_mlog_~x 1073741823)) (and .cse0 (<= ULTIMATE.start_mlog_~x 268435455) (<= ULTIMATE.start_mlog_~res~0 3)) (and (<= ULTIMATE.start_mlog_~x 2097151) (<= ULTIMATE.start_mlog_~res~0 10) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 17) (<= ULTIMATE.start_mlog_~x 16383)) (and (<= ULTIMATE.start_mlog_~res~0 22) .cse0 (<= ULTIMATE.start_mlog_~x 511)) (and .cse0 (<= ULTIMATE.start_mlog_~x 31) (<= ULTIMATE.start_mlog_~res~0 26)) (and .cse0 (<= ULTIMATE.start_mlog_~x 127) (<= ULTIMATE.start_mlog_~res~0 24)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 6) (<= ULTIMATE.start_mlog_~x 33554431)) (and (<= ULTIMATE.start_mlog_~x 262143) .cse0 (<= ULTIMATE.start_mlog_~res~0 13)) (and (<= ULTIMATE.start_mlog_~res~0 21) .cse0 (<= ULTIMATE.start_mlog_~x 1023)) (and (<= ULTIMATE.start_mlog_~res~0 19) .cse0 (<= ULTIMATE.start_mlog_~x 4095)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 27) (<= ULTIMATE.start_mlog_~x 15)) (and (<= ULTIMATE.start_mlog_~res~0 28) .cse0 (<= ULTIMATE.start_mlog_~x 7)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 29) (<= ULTIMATE.start_mlog_~x 3)) (and .cse0 (<= ULTIMATE.start_mlog_~x 1) (<= ULTIMATE.start_mlog_~res~0 30)) (and .cse0 (<= ULTIMATE.start_mlog_~x 2147483647) (<= ULTIMATE.start_mlog_~res~0 0)) (and (<= ULTIMATE.start_mlog_~res~0 7) .cse0 (<= ULTIMATE.start_mlog_~x 16777215)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 12) (<= ULTIMATE.start_mlog_~x 524287)) (and (<= ULTIMATE.start_mlog_~res~0 23) .cse0 (<= ULTIMATE.start_mlog_~x 255)) (and (<= ULTIMATE.start_mlog_~res~0 15) .cse0 (<= ULTIMATE.start_mlog_~x 65535)) (and (<= ULTIMATE.start_mlog_~res~0 16) .cse0 (<= ULTIMATE.start_mlog_~x 32767)) (and (<= ULTIMATE.start_mlog_~x 8191) .cse0 (<= ULTIMATE.start_mlog_~res~0 18)) (and (<= ULTIMATE.start_mlog_~res~0 25) (<= ULTIMATE.start_mlog_~x 63) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 4) (<= ULTIMATE.start_mlog_~x 134217727)) (and (<= ULTIMATE.start_mlog_~res~0 20) .cse0 (<= ULTIMATE.start_mlog_~x 2047)))) [2020-11-29 19:42:23,222 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2020-11-29 19:42:23,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-11-29 19:42:23,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-11-29 19:42:23,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:42:23,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:42:23,223 INFO L270 CegarLoopResult]: At program point L14(lines 3 16) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2020-11-29 19:42:23,223 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-29 19:42:23,223 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-11-29 19:42:23,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:42:23 BoogieIcfgContainer [2020-11-29 19:42:23,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:42:23,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:42:23,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:42:23,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:42:23,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:19" (3/4) ... [2020-11-29 19:42:23,258 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:42:23,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:42:23,270 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 19:42:23,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4287d9ea-64c2-41c1-9f10-7b79c8310b23/bin/uautomizer/witness.graphml [2020-11-29 19:42:23,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:42:23,312 INFO L168 Benchmark]: Toolchain (without parser) took 64115.81 ms. Allocated memory was 96.5 MB in the beginning and 299.9 MB in the end (delta: 203.4 MB). Free memory was 71.9 MB in the beginning and 159.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 114.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:23,313 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 75.5 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:23,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.10 ms. Allocated memory is still 96.5 MB. Free memory was 71.9 MB in the beginning and 68.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:23,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 67.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:23,314 INFO L168 Benchmark]: Boogie Preprocessor took 30.33 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 66.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:23,315 INFO L168 Benchmark]: RCFGBuilder took 337.95 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 57.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:23,316 INFO L168 Benchmark]: TraceAbstraction took 63292.72 ms. Allocated memory was 96.5 MB in the beginning and 299.9 MB in the end (delta: 203.4 MB). Free memory was 56.7 MB in the beginning and 162.6 MB in the end (delta: -105.9 MB). Peak memory consumption was 99.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:23,316 INFO L168 Benchmark]: Witness Printer took 58.08 ms. Allocated memory is still 299.9 MB. Free memory was 162.6 MB in the beginning and 159.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:23,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 75.5 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.10 ms. Allocated memory is still 96.5 MB. Free memory was 71.9 MB in the beginning and 68.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 67.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.33 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 66.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.95 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 57.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 63292.72 ms. Allocated memory was 96.5 MB in the beginning and 299.9 MB in the end (delta: 203.4 MB). Free memory was 56.7 MB in the beginning and 162.6 MB in the end (delta: -105.9 MB). Peak memory consumption was 99.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.08 ms. Allocated memory is still 299.9 MB. Free memory was 162.6 MB in the beginning and 159.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((x <= 1048575 && 0 <= res) && res <= 11) || ((0 <= res && res <= 9) && x <= 4194303)) || ((x <= 536870911 && 0 <= res) && res <= 2)) || ((0 <= res && x <= 8388607) && res <= 8)) || ((res <= 14 && x <= 131071) && 0 <= res)) || ((0 <= res && x <= 67108863) && res <= 5)) || ((res <= 1 && 0 <= res) && x <= 1073741823)) || ((0 <= res && x <= 268435455) && res <= 3)) || ((x <= 2097151 && res <= 10) && 0 <= res)) || ((0 <= res && res <= 17) && x <= 16383)) || ((res <= 22 && 0 <= res) && x <= 511)) || ((0 <= res && x <= 31) && res <= 26)) || ((0 <= res && x <= 127) && res <= 24)) || ((0 <= res && res <= 6) && x <= 33554431)) || ((x <= 262143 && 0 <= res) && res <= 13)) || ((res <= 21 && 0 <= res) && x <= 1023)) || ((res <= 19 && 0 <= res) && x <= 4095)) || ((0 <= res && res <= 27) && x <= 15)) || ((res <= 28 && 0 <= res) && x <= 7)) || ((0 <= res && res <= 29) && x <= 3)) || ((0 <= res && x <= 1) && res <= 30)) || ((0 <= res && x <= 2147483647) && res <= 0)) || ((res <= 7 && 0 <= res) && x <= 16777215)) || ((0 <= res && res <= 12) && x <= 524287)) || ((res <= 23 && 0 <= res) && x <= 255)) || ((res <= 15 && 0 <= res) && x <= 65535)) || ((res <= 16 && 0 <= res) && x <= 32767)) || ((x <= 8191 && 0 <= res) && res <= 18)) || ((res <= 25 && x <= 63) && 0 <= res)) || ((0 <= res && res <= 4) && x <= 134217727)) || ((res <= 20 && 0 <= res) && x <= 2047) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 62.4s, OverallIterations: 34, TraceHistogramMax: 32, AutomataDifference: 18.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 1784 SDslu, 2332 SDs, 0 SdLazy, 3955 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4030 GetRequests, 2446 SyntacticMatches, 30 SemanticMatches, 1554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14850 ImplicationChecksByTransitivity, 40.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 34 MinimizatonAttempts, 32 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 317 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 31.5s InterpolantComputationTime, 5124 NumberOfCodeBlocks, 5124 NumberOfCodeBlocksAsserted, 324 NumberOfCheckSat, 5060 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644332 SizeOfPredicates, 495 NumberOfNonLiveVariables, 5655 ConjunctsInSsa, 1020 ConjunctsInUnsatCore, 64 InterpolantComputations, 4 PerfectInterpolantSequences, 2449/51119 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...