./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 94b61e96441ca10668b436b4ef10dfd9464f0863 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:39:51,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:39:51,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:39:51,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:39:51,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:39:51,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:39:51,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:39:51,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:39:51,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:39:51,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:39:51,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:39:51,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:39:51,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:39:51,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:39:51,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:39:51,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:39:51,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:39:51,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:39:51,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:39:51,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:39:51,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:39:51,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:39:51,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:39:51,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:39:51,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:39:51,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:39:51,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:39:51,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:39:51,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:39:51,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:39:51,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:39:51,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:39:51,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:39:51,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:39:51,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:39:51,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:39:51,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:39:51,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:39:51,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:39:51,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:39:51,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:39:51,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-16 00:39:51,822 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:39:51,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:39:51,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:39:51,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:39:51,824 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:39:51,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:39:51,824 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:39:51,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:39:51,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:39:51,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:39:51,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:39:51,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:39:51,825 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-16 00:39:51,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:39:51,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:39:51,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:39:51,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:39:51,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:39:51,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:39:51,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:39:51,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:39:51,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:39:51,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:39:51,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:39:51,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:39:51,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:39:51,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:39:51,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2019-11-16 00:39:51,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:39:51,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:39:51,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:39:51,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:39:51,868 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:39:51,868 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-16 00:39:51,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/data/a33ef8dfd/752c466b13b8471398b8a62ce8ed24f9/FLAG008a6afed [2019-11-16 00:39:52,302 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:39:52,303 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-16 00:39:52,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/data/a33ef8dfd/752c466b13b8471398b8a62ce8ed24f9/FLAG008a6afed [2019-11-16 00:39:52,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/data/a33ef8dfd/752c466b13b8471398b8a62ce8ed24f9 [2019-11-16 00:39:52,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:39:52,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:39:52,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:39:52,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:39:52,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:39:52,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:52" (1/1) ... [2019-11-16 00:39:52,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170ee6e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:52, skipping insertion in model container [2019-11-16 00:39:52,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:52" (1/1) ... [2019-11-16 00:39:52,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:39:52,778 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:39:53,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:39:53,024 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:39:53,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:39:53,055 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:39:53,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53 WrapperNode [2019-11-16 00:39:53,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:39:53,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:39:53,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:39:53,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:39:53,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:39:53,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:39:53,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:39:53,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:39:53,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... [2019-11-16 00:39:53,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:39:53,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:39:53,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:39:53,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:39:53,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:39:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:39:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:39:53,330 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:39:53,330 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-16 00:39:53,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:53 BoogieIcfgContainer [2019-11-16 00:39:53,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:39:53,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:39:53,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:39:53,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:39:53,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:39:52" (1/3) ... [2019-11-16 00:39:53,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a468e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:53, skipping insertion in model container [2019-11-16 00:39:53,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:53" (2/3) ... [2019-11-16 00:39:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a468e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:53, skipping insertion in model container [2019-11-16 00:39:53,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:53" (3/3) ... [2019-11-16 00:39:53,339 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-11-16 00:39:53,347 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:39:53,352 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-16 00:39:53,362 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-16 00:39:53,380 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:39:53,380 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:39:53,381 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:39:53,381 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:39:53,381 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:39:53,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:39:53,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:39:53,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:39:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-16 00:39:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-16 00:39:53,399 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:53,400 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-16 00:39:53,401 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:53,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-16 00:39:53,414 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:53,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609069251] [2019-11-16 00:39:53,415 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,415 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:53,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609069251] [2019-11-16 00:39:53,516 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:53,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-16 00:39:53,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545252182] [2019-11-16 00:39:53,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:53,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:53,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:53,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,536 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-16 00:39:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:53,595 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-16 00:39:53,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:53,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-16 00:39:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:53,605 INFO L225 Difference]: With dead ends: 22 [2019-11-16 00:39:53,605 INFO L226 Difference]: Without dead ends: 13 [2019-11-16 00:39:53,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-16 00:39:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-16 00:39:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-16 00:39:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-16 00:39:53,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-16 00:39:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:53,638 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-16 00:39:53,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-16 00:39:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-16 00:39:53,639 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:53,639 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-16 00:39:53,646 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-16 00:39:53,647 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:53,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115920093] [2019-11-16 00:39:53,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:53,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115920093] [2019-11-16 00:39:53,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:53,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-16 00:39:53,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243738241] [2019-11-16 00:39:53,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:53,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,671 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-16 00:39:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:53,693 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-16 00:39:53,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:53,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-16 00:39:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:53,695 INFO L225 Difference]: With dead ends: 12 [2019-11-16 00:39:53,695 INFO L226 Difference]: Without dead ends: 11 [2019-11-16 00:39:53,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-16 00:39:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-16 00:39:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-16 00:39:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-16 00:39:53,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-16 00:39:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:53,699 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-16 00:39:53,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-16 00:39:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-16 00:39:53,699 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:53,700 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-16 00:39:53,700 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-16 00:39:53,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:53,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007337743] [2019-11-16 00:39:53,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:53,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007337743] [2019-11-16 00:39:53,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:53,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-16 00:39:53,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647546675] [2019-11-16 00:39:53,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:53,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:53,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,741 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-11-16 00:39:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:53,769 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-16 00:39:53,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:53,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-16 00:39:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:53,770 INFO L225 Difference]: With dead ends: 15 [2019-11-16 00:39:53,770 INFO L226 Difference]: Without dead ends: 14 [2019-11-16 00:39:53,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-16 00:39:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-16 00:39:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-16 00:39:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-16 00:39:53,773 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-16 00:39:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:53,774 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-16 00:39:53,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-16 00:39:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-16 00:39:53,774 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:53,775 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-16 00:39:53,775 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:53,775 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-16 00:39:53,775 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:53,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533050814] [2019-11-16 00:39:53,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,776 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:53,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533050814] [2019-11-16 00:39:53,813 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:39:53,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-16 00:39:53,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113546885] [2019-11-16 00:39:53,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:39:53,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:53,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:39:53,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,814 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-16 00:39:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:53,828 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-16 00:39:53,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:39:53,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-16 00:39:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:53,829 INFO L225 Difference]: With dead ends: 13 [2019-11-16 00:39:53,829 INFO L226 Difference]: Without dead ends: 12 [2019-11-16 00:39:53,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:39:53,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-16 00:39:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-16 00:39:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-16 00:39:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-16 00:39:53,832 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-16 00:39:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:53,832 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-16 00:39:53,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:39:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-16 00:39:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:39:53,833 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:53,833 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:39:53,833 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-16 00:39:53,834 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:53,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985631403] [2019-11-16 00:39:53,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:53,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:53,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985631403] [2019-11-16 00:39:53,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631197514] [2019-11-16 00:39:53,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:53,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-16 00:39:53,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:53,936 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:53,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-16 00:39:53,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38003245] [2019-11-16 00:39:53,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:39:53,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:53,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:39:53,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:39:53,938 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-16 00:39:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:53,981 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-16 00:39:53,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:39:53,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-16 00:39:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:53,983 INFO L225 Difference]: With dead ends: 17 [2019-11-16 00:39:53,983 INFO L226 Difference]: Without dead ends: 16 [2019-11-16 00:39:53,983 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:39:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-16 00:39:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-16 00:39:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-16 00:39:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-16 00:39:53,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-16 00:39:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:53,989 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-16 00:39:53,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:39:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-16 00:39:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:39:53,990 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:53,990 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-16 00:39:54,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:54,197 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-16 00:39:54,198 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:54,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544917856] [2019-11-16 00:39:54,198 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:54,198 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:54,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:54,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544917856] [2019-11-16 00:39:54,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825909213] [2019-11-16 00:39:54,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:54,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-16 00:39:54,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:54,273 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:54,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-16 00:39:54,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403286997] [2019-11-16 00:39:54,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:39:54,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:39:54,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:39:54,275 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-11-16 00:39:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:54,290 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-16 00:39:54,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:39:54,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-16 00:39:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:54,291 INFO L225 Difference]: With dead ends: 19 [2019-11-16 00:39:54,291 INFO L226 Difference]: Without dead ends: 18 [2019-11-16 00:39:54,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:39:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-16 00:39:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-16 00:39:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-16 00:39:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-16 00:39:54,295 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-16 00:39:54,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:54,295 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-16 00:39:54,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:39:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-16 00:39:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:39:54,296 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:54,296 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-11-16 00:39:54,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:54,497 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-11-16 00:39:54,498 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:54,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594188242] [2019-11-16 00:39:54,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:54,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:54,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:54,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594188242] [2019-11-16 00:39:54,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681863607] [2019-11-16 00:39:54,559 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:54,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:39:54,607 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:54,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:39:54,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:54,635 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:54,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-16 00:39:54,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015662447] [2019-11-16 00:39:54,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:39:54,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:54,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:39:54,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:39:54,637 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-16 00:39:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:54,676 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-16 00:39:54,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:39:54,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-16 00:39:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:54,677 INFO L225 Difference]: With dead ends: 22 [2019-11-16 00:39:54,678 INFO L226 Difference]: Without dead ends: 21 [2019-11-16 00:39:54,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:39:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-16 00:39:54,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-16 00:39:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-16 00:39:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-16 00:39:54,682 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-11-16 00:39:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:54,682 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-16 00:39:54,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:39:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-16 00:39:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-16 00:39:54,683 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:54,683 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-16 00:39:54,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:54,884 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-16 00:39:54,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:54,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640489221] [2019-11-16 00:39:54,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:54,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:54,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:54,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640489221] [2019-11-16 00:39:54,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697604759] [2019-11-16 00:39:54,920 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:54,959 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:39:54,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:54,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:39:54,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:54,976 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:54,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-16 00:39:54,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817154404] [2019-11-16 00:39:54,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:39:54,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:39:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:39:54,977 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-16 00:39:54,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:54,995 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-16 00:39:54,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:39:54,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-16 00:39:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:54,996 INFO L225 Difference]: With dead ends: 24 [2019-11-16 00:39:54,997 INFO L226 Difference]: Without dead ends: 23 [2019-11-16 00:39:54,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:39:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-16 00:39:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-16 00:39:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-16 00:39:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-16 00:39:55,001 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-11-16 00:39:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:55,002 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-16 00:39:55,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:39:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-16 00:39:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-16 00:39:55,002 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:55,003 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-11-16 00:39:55,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:55,204 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-11-16 00:39:55,204 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:55,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393264707] [2019-11-16 00:39:55,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:55,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:55,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:55,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393264707] [2019-11-16 00:39:55,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994013120] [2019-11-16 00:39:55,268 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:55,306 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-16 00:39:55,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:55,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:39:55,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:55,343 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:55,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-16 00:39:55,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061063944] [2019-11-16 00:39:55,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:39:55,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:39:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:39:55,345 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-16 00:39:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:55,375 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-16 00:39:55,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:39:55,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-16 00:39:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:55,376 INFO L225 Difference]: With dead ends: 27 [2019-11-16 00:39:55,376 INFO L226 Difference]: Without dead ends: 26 [2019-11-16 00:39:55,377 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:39:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-16 00:39:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-16 00:39:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-16 00:39:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-16 00:39:55,381 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-11-16 00:39:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:55,381 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-16 00:39:55,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:39:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-16 00:39:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:39:55,382 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:55,382 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-16 00:39:55,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:55,583 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-16 00:39:55,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:55,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330790723] [2019-11-16 00:39:55,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:55,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:55,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:55,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330790723] [2019-11-16 00:39:55,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393898413] [2019-11-16 00:39:55,634 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:55,668 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-16 00:39:55,668 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:55,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:39:55,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:55,697 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:55,697 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-16 00:39:55,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433922164] [2019-11-16 00:39:55,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:39:55,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:55,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:39:55,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:39:55,698 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-11-16 00:39:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:55,724 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-16 00:39:55,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:39:55,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-16 00:39:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:55,725 INFO L225 Difference]: With dead ends: 29 [2019-11-16 00:39:55,725 INFO L226 Difference]: Without dead ends: 28 [2019-11-16 00:39:55,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:39:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-16 00:39:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-16 00:39:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-16 00:39:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-16 00:39:55,729 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-11-16 00:39:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:55,730 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-16 00:39:55,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:39:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-16 00:39:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-16 00:39:55,730 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:55,730 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-11-16 00:39:55,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:55,932 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-11-16 00:39:55,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:55,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039102783] [2019-11-16 00:39:55,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:55,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:55,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:55,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039102783] [2019-11-16 00:39:55,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100761173] [2019-11-16 00:39:55,994 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:56,023 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:39:56,023 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:56,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:39:56,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:56,062 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:56,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-16 00:39:56,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854884835] [2019-11-16 00:39:56,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:39:56,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:56,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:39:56,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:39:56,064 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-11-16 00:39:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:56,109 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-16 00:39:56,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:39:56,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-11-16 00:39:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:56,111 INFO L225 Difference]: With dead ends: 32 [2019-11-16 00:39:56,111 INFO L226 Difference]: Without dead ends: 31 [2019-11-16 00:39:56,111 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:39:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-16 00:39:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-16 00:39:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-16 00:39:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-16 00:39:56,115 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-11-16 00:39:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:56,116 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-16 00:39:56,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:39:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-16 00:39:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-16 00:39:56,119 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:56,120 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-16 00:39:56,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:56,324 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-16 00:39:56,324 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:56,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845115961] [2019-11-16 00:39:56,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:56,325 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:56,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:56,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845115961] [2019-11-16 00:39:56,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079880620] [2019-11-16 00:39:56,398 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:56,435 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:39:56,435 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:56,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:39:56,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:56,475 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:56,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-16 00:39:56,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146035737] [2019-11-16 00:39:56,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:39:56,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:56,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:39:56,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:39:56,477 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-11-16 00:39:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:56,504 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-11-16 00:39:56,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:39:56,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-16 00:39:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:56,506 INFO L225 Difference]: With dead ends: 34 [2019-11-16 00:39:56,506 INFO L226 Difference]: Without dead ends: 33 [2019-11-16 00:39:56,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:39:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-16 00:39:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-16 00:39:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-16 00:39:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-16 00:39:56,510 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-11-16 00:39:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:56,511 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-16 00:39:56,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:39:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-16 00:39:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-16 00:39:56,512 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:56,512 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-11-16 00:39:56,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:56,713 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:56,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-11-16 00:39:56,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:56,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537256392] [2019-11-16 00:39:56,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:56,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:56,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:56,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537256392] [2019-11-16 00:39:56,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438435756] [2019-11-16 00:39:56,790 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:56,824 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-16 00:39:56,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:56,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:39:56,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:56,877 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:56,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-16 00:39:56,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477333932] [2019-11-16 00:39:56,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:39:56,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:56,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:39:56,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:39:56,879 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-11-16 00:39:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:56,915 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-11-16 00:39:56,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:39:56,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-16 00:39:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:56,917 INFO L225 Difference]: With dead ends: 37 [2019-11-16 00:39:56,917 INFO L226 Difference]: Without dead ends: 36 [2019-11-16 00:39:56,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:39:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-16 00:39:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-16 00:39:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-16 00:39:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-11-16 00:39:56,922 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-11-16 00:39:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:56,922 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-11-16 00:39:56,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:39:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-11-16 00:39:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-16 00:39:56,924 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:56,924 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-16 00:39:57,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:57,127 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-16 00:39:57,127 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:57,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867724469] [2019-11-16 00:39:57,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:57,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:57,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:57,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867724469] [2019-11-16 00:39:57,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940120366] [2019-11-16 00:39:57,186 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:57,228 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-16 00:39:57,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:57,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:39:57,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:57,283 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:57,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-16 00:39:57,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594481815] [2019-11-16 00:39:57,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:39:57,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:57,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:39:57,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:39:57,285 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-11-16 00:39:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:57,314 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-11-16 00:39:57,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:39:57,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-16 00:39:57,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:57,315 INFO L225 Difference]: With dead ends: 39 [2019-11-16 00:39:57,316 INFO L226 Difference]: Without dead ends: 38 [2019-11-16 00:39:57,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:39:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-16 00:39:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-11-16 00:39:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-16 00:39:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-11-16 00:39:57,320 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-11-16 00:39:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:57,320 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-11-16 00:39:57,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:39:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-11-16 00:39:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-16 00:39:57,321 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:57,322 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-11-16 00:39:57,528 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:57,529 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:57,529 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-11-16 00:39:57,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:57,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544695804] [2019-11-16 00:39:57,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:57,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:57,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:57,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544695804] [2019-11-16 00:39:57,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606018694] [2019-11-16 00:39:57,636 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:39:57,672 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-16 00:39:57,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:57,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:39:57,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:57,733 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:57,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-16 00:39:57,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300741973] [2019-11-16 00:39:57,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-16 00:39:57,734 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-16 00:39:57,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:39:57,735 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-11-16 00:39:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:57,778 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-16 00:39:57,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:39:57,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-16 00:39:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:57,782 INFO L225 Difference]: With dead ends: 42 [2019-11-16 00:39:57,782 INFO L226 Difference]: Without dead ends: 41 [2019-11-16 00:39:57,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:39:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-16 00:39:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-16 00:39:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-16 00:39:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-16 00:39:57,786 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-11-16 00:39:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:57,787 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-16 00:39:57,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-16 00:39:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-16 00:39:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-16 00:39:57,788 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:57,788 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-16 00:39:57,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:57,992 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:57,992 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-16 00:39:57,992 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:57,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013507018] [2019-11-16 00:39:57,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:57,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:57,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:58,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013507018] [2019-11-16 00:39:58,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500591912] [2019-11-16 00:39:58,067 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:39:58,097 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-16 00:39:58,097 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:58,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:39:58,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:58,148 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:58,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-16 00:39:58,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946713681] [2019-11-16 00:39:58,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-16 00:39:58,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:58,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-16 00:39:58,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:39:58,149 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-11-16 00:39:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:58,183 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-16 00:39:58,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:39:58,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-16 00:39:58,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:58,184 INFO L225 Difference]: With dead ends: 44 [2019-11-16 00:39:58,184 INFO L226 Difference]: Without dead ends: 43 [2019-11-16 00:39:58,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:39:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-16 00:39:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-16 00:39:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-16 00:39:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-16 00:39:58,188 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-11-16 00:39:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:58,189 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-16 00:39:58,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-16 00:39:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-16 00:39:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-16 00:39:58,189 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:58,190 INFO L380 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-11-16 00:39:58,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:58,390 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:58,391 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-11-16 00:39:58,391 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:58,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946257305] [2019-11-16 00:39:58,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:58,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:58,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:58,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946257305] [2019-11-16 00:39:58,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112041834] [2019-11-16 00:39:58,494 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:39:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:58,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:39:58,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:58,600 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:58,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-16 00:39:58,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098979343] [2019-11-16 00:39:58,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:39:58,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:58,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:39:58,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:39:58,601 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-11-16 00:39:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:58,642 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-16 00:39:58,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-16 00:39:58,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-16 00:39:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:58,643 INFO L225 Difference]: With dead ends: 47 [2019-11-16 00:39:58,643 INFO L226 Difference]: Without dead ends: 46 [2019-11-16 00:39:58,643 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:39:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-16 00:39:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-11-16 00:39:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-16 00:39:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-11-16 00:39:58,647 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-11-16 00:39:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:58,648 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-11-16 00:39:58,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:39:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-11-16 00:39:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-16 00:39:58,649 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:58,649 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-16 00:39:58,851 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:58,852 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:58,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:58,852 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-16 00:39:58,852 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:58,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86364900] [2019-11-16 00:39:58,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:58,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:58,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:58,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86364900] [2019-11-16 00:39:58,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090920969] [2019-11-16 00:39:58,925 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:39:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:58,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:39:58,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:59,047 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:59,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-16 00:39:59,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457104872] [2019-11-16 00:39:59,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:39:59,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:59,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:39:59,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:39:59,048 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-11-16 00:39:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:59,085 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-11-16 00:39:59,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-16 00:39:59,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-11-16 00:39:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:59,086 INFO L225 Difference]: With dead ends: 49 [2019-11-16 00:39:59,086 INFO L226 Difference]: Without dead ends: 48 [2019-11-16 00:39:59,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:39:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-16 00:39:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-11-16 00:39:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-16 00:39:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-11-16 00:39:59,090 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-11-16 00:39:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:59,091 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-11-16 00:39:59,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:39:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-11-16 00:39:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-16 00:39:59,091 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:59,092 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-11-16 00:39:59,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:59,292 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:59,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-11-16 00:39:59,293 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:59,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131103581] [2019-11-16 00:39:59,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:59,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:59,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:59,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131103581] [2019-11-16 00:39:59,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302198379] [2019-11-16 00:39:59,380 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:59,413 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:39:59,413 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:59,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:39:59,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:59,494 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:59,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-16 00:39:59,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895061960] [2019-11-16 00:39:59,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-16 00:39:59,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-16 00:39:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:39:59,495 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-11-16 00:39:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:59,550 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-11-16 00:39:59,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-16 00:39:59,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-11-16 00:39:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:59,551 INFO L225 Difference]: With dead ends: 52 [2019-11-16 00:39:59,551 INFO L226 Difference]: Without dead ends: 51 [2019-11-16 00:39:59,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:39:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-16 00:39:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-16 00:39:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-16 00:39:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-11-16 00:39:59,556 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-11-16 00:39:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:39:59,557 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-11-16 00:39:59,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-16 00:39:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-11-16 00:39:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-16 00:39:59,558 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:39:59,558 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-16 00:39:59,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:39:59,765 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:39:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:39:59,765 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-16 00:39:59,765 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:39:59,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405102018] [2019-11-16 00:39:59,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:59,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:39:59,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:39:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:39:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:59,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405102018] [2019-11-16 00:39:59,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977057115] [2019-11-16 00:39:59,846 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:39:59,876 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:39:59,876 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:39:59,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:39:59,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:39:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:39:59,960 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:39:59,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-16 00:39:59,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952894797] [2019-11-16 00:39:59,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-16 00:39:59,961 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:39:59,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-16 00:39:59,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:39:59,962 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-11-16 00:39:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:39:59,998 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-16 00:39:59,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-16 00:39:59,999 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-11-16 00:39:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:39:59,999 INFO L225 Difference]: With dead ends: 54 [2019-11-16 00:39:59,999 INFO L226 Difference]: Without dead ends: 53 [2019-11-16 00:40:00,000 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:40:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-16 00:40:00,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-16 00:40:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-16 00:40:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-16 00:40:00,003 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-11-16 00:40:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:00,004 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-16 00:40:00,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-16 00:40:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-16 00:40:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-16 00:40:00,005 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:00,005 INFO L380 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-11-16 00:40:00,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:00,205 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:00,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-11-16 00:40:00,206 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:00,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246937626] [2019-11-16 00:40:00,206 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:00,206 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:00,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:00,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246937626] [2019-11-16 00:40:00,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369551584] [2019-11-16 00:40:00,290 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:00,328 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-16 00:40:00,328 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:00,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-16 00:40:00,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:00,415 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:00,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-16 00:40:00,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412445385] [2019-11-16 00:40:00,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:40:00,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:00,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:40:00,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:40:00,416 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-11-16 00:40:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:00,481 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-11-16 00:40:00,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-16 00:40:00,482 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-11-16 00:40:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:00,482 INFO L225 Difference]: With dead ends: 57 [2019-11-16 00:40:00,482 INFO L226 Difference]: Without dead ends: 56 [2019-11-16 00:40:00,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:40:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-16 00:40:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-11-16 00:40:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-16 00:40:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-11-16 00:40:00,487 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-11-16 00:40:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:00,487 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-11-16 00:40:00,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:40:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-11-16 00:40:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-16 00:40:00,488 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:00,488 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-16 00:40:00,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:00,696 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:00,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-16 00:40:00,696 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:00,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527263923] [2019-11-16 00:40:00,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:00,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:00,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:00,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527263923] [2019-11-16 00:40:00,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281586152] [2019-11-16 00:40:00,810 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:00,850 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-16 00:40:00,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:00,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-16 00:40:00,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:00,966 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:00,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-16 00:40:00,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201687522] [2019-11-16 00:40:00,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:40:00,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:00,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:40:00,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:40:00,967 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-11-16 00:40:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:01,013 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-11-16 00:40:01,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-16 00:40:01,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-16 00:40:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:01,014 INFO L225 Difference]: With dead ends: 59 [2019-11-16 00:40:01,014 INFO L226 Difference]: Without dead ends: 58 [2019-11-16 00:40:01,014 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:40:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-16 00:40:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-11-16 00:40:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-16 00:40:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-16 00:40:01,018 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-11-16 00:40:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:01,018 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-16 00:40:01,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:40:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-16 00:40:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-16 00:40:01,019 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:01,019 INFO L380 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-11-16 00:40:01,222 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:01,222 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-11-16 00:40:01,223 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:01,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413040762] [2019-11-16 00:40:01,223 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:01,223 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:01,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:01,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413040762] [2019-11-16 00:40:01,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299156811] [2019-11-16 00:40:01,340 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:01,369 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:40:01,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:01,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:40:01,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:01,457 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:01,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-16 00:40:01,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072988793] [2019-11-16 00:40:01,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-16 00:40:01,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-16 00:40:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:40:01,458 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-11-16 00:40:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:01,500 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-11-16 00:40:01,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:40:01,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-16 00:40:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:01,501 INFO L225 Difference]: With dead ends: 62 [2019-11-16 00:40:01,501 INFO L226 Difference]: Without dead ends: 61 [2019-11-16 00:40:01,501 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:40:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-16 00:40:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-11-16 00:40:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-16 00:40:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-11-16 00:40:01,504 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-11-16 00:40:01,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:01,505 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-11-16 00:40:01,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-16 00:40:01,505 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-11-16 00:40:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-16 00:40:01,506 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:01,506 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-16 00:40:01,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:01,706 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:01,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-16 00:40:01,707 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:01,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074875423] [2019-11-16 00:40:01,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:01,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:01,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:01,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074875423] [2019-11-16 00:40:01,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027382044] [2019-11-16 00:40:01,808 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:01,858 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:40:01,858 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:01,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:40:01,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:01,976 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:01,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-16 00:40:01,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62511450] [2019-11-16 00:40:01,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-16 00:40:01,979 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:01,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-16 00:40:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:40:01,982 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-11-16 00:40:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:02,017 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-16 00:40:02,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:40:02,017 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-11-16 00:40:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:02,018 INFO L225 Difference]: With dead ends: 64 [2019-11-16 00:40:02,018 INFO L226 Difference]: Without dead ends: 63 [2019-11-16 00:40:02,018 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:40:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-16 00:40:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-16 00:40:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-16 00:40:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-11-16 00:40:02,022 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-11-16 00:40:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:02,022 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-11-16 00:40:02,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-16 00:40:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-11-16 00:40:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-16 00:40:02,023 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:02,023 INFO L380 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-11-16 00:40:02,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:02,227 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-11-16 00:40:02,228 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:02,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122701632] [2019-11-16 00:40:02,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:02,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:02,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:02,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122701632] [2019-11-16 00:40:02,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770651152] [2019-11-16 00:40:02,362 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:02,409 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-16 00:40:02,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:02,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:40:02,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:02,559 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:02,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-16 00:40:02,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985873091] [2019-11-16 00:40:02,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-16 00:40:02,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-16 00:40:02,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:40:02,560 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-11-16 00:40:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:02,608 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-11-16 00:40:02,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-16 00:40:02,608 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-11-16 00:40:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:02,609 INFO L225 Difference]: With dead ends: 67 [2019-11-16 00:40:02,609 INFO L226 Difference]: Without dead ends: 66 [2019-11-16 00:40:02,609 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:40:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-16 00:40:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-11-16 00:40:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-16 00:40:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-11-16 00:40:02,612 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-11-16 00:40:02,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:02,612 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-11-16 00:40:02,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-16 00:40:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-11-16 00:40:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-16 00:40:02,613 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:02,613 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-16 00:40:02,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:02,814 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:02,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:02,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-16 00:40:02,815 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:02,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411082549] [2019-11-16 00:40:02,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:02,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:02,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:02,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411082549] [2019-11-16 00:40:02,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325348588] [2019-11-16 00:40:02,941 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:02,988 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-16 00:40:02,988 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:02,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:40:02,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:03,121 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:03,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-16 00:40:03,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634301791] [2019-11-16 00:40:03,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-16 00:40:03,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:03,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-16 00:40:03,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:40:03,122 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-11-16 00:40:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:03,161 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-11-16 00:40:03,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-16 00:40:03,162 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-11-16 00:40:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:03,163 INFO L225 Difference]: With dead ends: 69 [2019-11-16 00:40:03,163 INFO L226 Difference]: Without dead ends: 68 [2019-11-16 00:40:03,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:40:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-16 00:40:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-11-16 00:40:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-16 00:40:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-11-16 00:40:03,166 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-11-16 00:40:03,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:03,166 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-11-16 00:40:03,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-16 00:40:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-11-16 00:40:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-16 00:40:03,167 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:03,167 INFO L380 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-11-16 00:40:03,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:03,368 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-11-16 00:40:03,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:03,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456630351] [2019-11-16 00:40:03,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:03,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:03,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:03,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456630351] [2019-11-16 00:40:03,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958160760] [2019-11-16 00:40:03,525 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:03,570 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-16 00:40:03,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:03,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:40:03,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:03,694 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:03,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-16 00:40:03,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270260869] [2019-11-16 00:40:03,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-16 00:40:03,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:03,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-16 00:40:03,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:40:03,695 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-11-16 00:40:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:03,763 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-16 00:40:03,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-16 00:40:03,764 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-11-16 00:40:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:03,764 INFO L225 Difference]: With dead ends: 72 [2019-11-16 00:40:03,765 INFO L226 Difference]: Without dead ends: 71 [2019-11-16 00:40:03,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:40:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-16 00:40:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-11-16 00:40:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-16 00:40:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-11-16 00:40:03,768 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-11-16 00:40:03,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:03,768 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-11-16 00:40:03,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-16 00:40:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-11-16 00:40:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-16 00:40:03,769 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:03,769 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-16 00:40:03,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:03,969 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:03,970 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-16 00:40:03,970 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:03,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664147484] [2019-11-16 00:40:03,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:03,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:03,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:04,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664147484] [2019-11-16 00:40:04,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710120986] [2019-11-16 00:40:04,105 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:04,148 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-16 00:40:04,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:04,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:40:04,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:04,255 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:04,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-16 00:40:04,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717367373] [2019-11-16 00:40:04,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-16 00:40:04,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:04,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-16 00:40:04,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:40:04,257 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-11-16 00:40:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:04,309 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-16 00:40:04,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-16 00:40:04,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-11-16 00:40:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:04,310 INFO L225 Difference]: With dead ends: 74 [2019-11-16 00:40:04,310 INFO L226 Difference]: Without dead ends: 73 [2019-11-16 00:40:04,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:40:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-16 00:40:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-11-16 00:40:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-16 00:40:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-11-16 00:40:04,313 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-11-16 00:40:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:04,313 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-11-16 00:40:04,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-16 00:40:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-11-16 00:40:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-16 00:40:04,314 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:04,314 INFO L380 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-11-16 00:40:04,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:04,515 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:04,515 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-11-16 00:40:04,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:04,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253684424] [2019-11-16 00:40:04,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:04,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:04,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:04,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253684424] [2019-11-16 00:40:04,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739462029] [2019-11-16 00:40:04,668 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:04,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-16 00:40:04,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:04,876 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:04,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-16 00:40:04,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743705857] [2019-11-16 00:40:04,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-16 00:40:04,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:04,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-16 00:40:04,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:40:04,878 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-11-16 00:40:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:04,947 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-11-16 00:40:04,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-16 00:40:04,947 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-11-16 00:40:04,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:04,948 INFO L225 Difference]: With dead ends: 77 [2019-11-16 00:40:04,948 INFO L226 Difference]: Without dead ends: 76 [2019-11-16 00:40:04,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:40:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-16 00:40:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-11-16 00:40:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-16 00:40:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-11-16 00:40:04,951 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-11-16 00:40:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:04,952 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-11-16 00:40:04,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-16 00:40:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-11-16 00:40:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-16 00:40:04,952 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:04,953 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-16 00:40:05,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:05,153 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-16 00:40:05,154 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:05,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400350535] [2019-11-16 00:40:05,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:05,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:05,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:05,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400350535] [2019-11-16 00:40:05,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564138251] [2019-11-16 00:40:05,289 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:05,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-16 00:40:05,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:05,487 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:05,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-16 00:40:05,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453370850] [2019-11-16 00:40:05,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-16 00:40:05,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:05,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-16 00:40:05,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:40:05,488 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-11-16 00:40:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:05,542 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-11-16 00:40:05,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-16 00:40:05,542 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-11-16 00:40:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:05,543 INFO L225 Difference]: With dead ends: 79 [2019-11-16 00:40:05,543 INFO L226 Difference]: Without dead ends: 78 [2019-11-16 00:40:05,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:40:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-16 00:40:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-16 00:40:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-16 00:40:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-11-16 00:40:05,546 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-11-16 00:40:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:05,547 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-11-16 00:40:05,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-16 00:40:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-11-16 00:40:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-16 00:40:05,548 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:05,548 INFO L380 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-11-16 00:40:05,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:05,751 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:05,752 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-11-16 00:40:05,752 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:05,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915405602] [2019-11-16 00:40:05,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:05,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:05,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:05,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915405602] [2019-11-16 00:40:05,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352530306] [2019-11-16 00:40:05,903 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:05,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:40:05,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:05,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-16 00:40:05,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:06,144 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:06,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-16 00:40:06,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47090313] [2019-11-16 00:40:06,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-16 00:40:06,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:06,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-16 00:40:06,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:40:06,146 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-11-16 00:40:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:06,211 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-11-16 00:40:06,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-16 00:40:06,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-11-16 00:40:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:06,213 INFO L225 Difference]: With dead ends: 82 [2019-11-16 00:40:06,213 INFO L226 Difference]: Without dead ends: 81 [2019-11-16 00:40:06,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:40:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-16 00:40:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-16 00:40:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-16 00:40:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-11-16 00:40:06,216 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-11-16 00:40:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:06,216 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-11-16 00:40:06,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-16 00:40:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-11-16 00:40:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-16 00:40:06,217 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:06,217 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-16 00:40:06,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:06,422 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-16 00:40:06,422 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:06,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329291248] [2019-11-16 00:40:06,422 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:06,422 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:06,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:06,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329291248] [2019-11-16 00:40:06,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328725515] [2019-11-16 00:40:06,579 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:06,616 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:40:06,617 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:06,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-16 00:40:06,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:06,780 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:06,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-16 00:40:06,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494947768] [2019-11-16 00:40:06,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-16 00:40:06,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:06,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-16 00:40:06,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:40:06,781 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-11-16 00:40:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:06,828 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-16 00:40:06,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-16 00:40:06,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-11-16 00:40:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:06,829 INFO L225 Difference]: With dead ends: 84 [2019-11-16 00:40:06,829 INFO L226 Difference]: Without dead ends: 83 [2019-11-16 00:40:06,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:40:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-16 00:40:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-11-16 00:40:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-16 00:40:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-11-16 00:40:06,832 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-11-16 00:40:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:06,833 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-11-16 00:40:06,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-16 00:40:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-11-16 00:40:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-16 00:40:06,835 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:06,835 INFO L380 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-11-16 00:40:07,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:07,038 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:07,038 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-11-16 00:40:07,039 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:07,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206212531] [2019-11-16 00:40:07,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:07,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:07,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:07,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206212531] [2019-11-16 00:40:07,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949944155] [2019-11-16 00:40:07,209 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:07,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-16 00:40:07,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:07,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-16 00:40:07,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:07,412 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:07,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-16 00:40:07,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236738611] [2019-11-16 00:40:07,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-16 00:40:07,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-16 00:40:07,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:40:07,413 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-11-16 00:40:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:07,468 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-11-16 00:40:07,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-16 00:40:07,468 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-11-16 00:40:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:07,469 INFO L225 Difference]: With dead ends: 87 [2019-11-16 00:40:07,469 INFO L226 Difference]: Without dead ends: 86 [2019-11-16 00:40:07,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:40:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-16 00:40:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-11-16 00:40:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-16 00:40:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-11-16 00:40:07,473 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-11-16 00:40:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:07,473 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-11-16 00:40:07,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-16 00:40:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-11-16 00:40:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-16 00:40:07,474 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:07,475 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-16 00:40:07,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:07,678 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:07,678 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-16 00:40:07,678 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:07,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302780938] [2019-11-16 00:40:07,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:07,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:07,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:07,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302780938] [2019-11-16 00:40:07,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002292427] [2019-11-16 00:40:07,862 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/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 [2019-11-16 00:40:07,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-16 00:40:07,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:07,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-16 00:40:07,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:08,080 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:08,081 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-16 00:40:08,081 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095874722] [2019-11-16 00:40:08,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-16 00:40:08,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:08,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-16 00:40:08,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:40:08,081 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-11-16 00:40:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:08,140 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-11-16 00:40:08,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-16 00:40:08,140 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-11-16 00:40:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:08,141 INFO L225 Difference]: With dead ends: 89 [2019-11-16 00:40:08,141 INFO L226 Difference]: Without dead ends: 88 [2019-11-16 00:40:08,141 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:40:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-16 00:40:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-11-16 00:40:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-16 00:40:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-11-16 00:40:08,144 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-11-16 00:40:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:08,145 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-11-16 00:40:08,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-16 00:40:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-11-16 00:40:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-16 00:40:08,145 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:08,146 INFO L380 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-11-16 00:40:08,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:08,346 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:08,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:08,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-11-16 00:40:08,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:08,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143771043] [2019-11-16 00:40:08,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:08,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:08,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:08,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143771043] [2019-11-16 00:40:08,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012197148] [2019-11-16 00:40:08,542 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:08,597 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:40:08,597 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:08,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-16 00:40:08,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:08,770 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:08,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-16 00:40:08,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747693895] [2019-11-16 00:40:08,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-16 00:40:08,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:08,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-16 00:40:08,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:40:08,771 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-11-16 00:40:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:08,857 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-11-16 00:40:08,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-16 00:40:08,857 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-11-16 00:40:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:08,858 INFO L225 Difference]: With dead ends: 92 [2019-11-16 00:40:08,858 INFO L226 Difference]: Without dead ends: 91 [2019-11-16 00:40:08,858 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:40:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-16 00:40:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-11-16 00:40:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-16 00:40:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-11-16 00:40:08,861 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-11-16 00:40:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:08,861 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-11-16 00:40:08,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-16 00:40:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-11-16 00:40:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-16 00:40:08,862 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:08,862 INFO L380 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-16 00:40:09,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:09,063 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:09,063 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-16 00:40:09,063 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:09,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164677117] [2019-11-16 00:40:09,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:09,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:09,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:09,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164677117] [2019-11-16 00:40:09,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240352245] [2019-11-16 00:40:09,272 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:09,322 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:40:09,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:09,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-16 00:40:09,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:09,557 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:09,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-16 00:40:09,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377051091] [2019-11-16 00:40:09,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-16 00:40:09,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-16 00:40:09,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:40:09,559 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-11-16 00:40:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:09,603 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-11-16 00:40:09,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-16 00:40:09,604 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-11-16 00:40:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:09,605 INFO L225 Difference]: With dead ends: 94 [2019-11-16 00:40:09,605 INFO L226 Difference]: Without dead ends: 93 [2019-11-16 00:40:09,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:40:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-16 00:40:09,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-11-16 00:40:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-16 00:40:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-11-16 00:40:09,608 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-11-16 00:40:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:09,608 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-11-16 00:40:09,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-16 00:40:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-11-16 00:40:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-16 00:40:09,609 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:09,609 INFO L380 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-11-16 00:40:09,812 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:09,813 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-11-16 00:40:09,813 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:09,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113308436] [2019-11-16 00:40:09,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:09,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:09,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:10,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113308436] [2019-11-16 00:40:10,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351666100] [2019-11-16 00:40:10,051 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:10,104 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-16 00:40:10,104 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:10,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:40:10,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:10,298 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:10,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-16 00:40:10,298 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013333996] [2019-11-16 00:40:10,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-16 00:40:10,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:10,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-16 00:40:10,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:40:10,300 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-11-16 00:40:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:10,376 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-11-16 00:40:10,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-16 00:40:10,376 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-11-16 00:40:10,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:10,377 INFO L225 Difference]: With dead ends: 97 [2019-11-16 00:40:10,377 INFO L226 Difference]: Without dead ends: 96 [2019-11-16 00:40:10,377 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:40:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-16 00:40:10,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-11-16 00:40:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-16 00:40:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-11-16 00:40:10,380 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-11-16 00:40:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:10,380 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-11-16 00:40:10,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-16 00:40:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-11-16 00:40:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-16 00:40:10,381 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:10,381 INFO L380 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-16 00:40:10,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:10,584 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:10,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:10,584 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-16 00:40:10,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:10,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525186819] [2019-11-16 00:40:10,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:10,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:10,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:10,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525186819] [2019-11-16 00:40:10,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753238862] [2019-11-16 00:40:10,807 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:10,873 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-16 00:40:10,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:10,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:40:10,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:11,116 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:11,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-16 00:40:11,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031809254] [2019-11-16 00:40:11,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-16 00:40:11,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:11,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-16 00:40:11,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:40:11,118 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-11-16 00:40:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:11,171 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-11-16 00:40:11,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-16 00:40:11,171 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-11-16 00:40:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:11,172 INFO L225 Difference]: With dead ends: 99 [2019-11-16 00:40:11,172 INFO L226 Difference]: Without dead ends: 98 [2019-11-16 00:40:11,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:40:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-16 00:40:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-16 00:40:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-16 00:40:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-11-16 00:40:11,175 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-11-16 00:40:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:11,176 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-11-16 00:40:11,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-16 00:40:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-11-16 00:40:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-16 00:40:11,176 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:11,177 INFO L380 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-11-16 00:40:11,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:11,377 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-11-16 00:40:11,378 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:11,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691420704] [2019-11-16 00:40:11,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:11,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:11,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:11,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691420704] [2019-11-16 00:40:11,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291241787] [2019-11-16 00:40:11,653 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:11,708 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-16 00:40:11,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:11,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:40:11,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:11,979 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:11,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-16 00:40:11,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727633675] [2019-11-16 00:40:11,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-16 00:40:11,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:11,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-16 00:40:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-16 00:40:11,981 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-11-16 00:40:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:12,065 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-11-16 00:40:12,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-16 00:40:12,065 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-11-16 00:40:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:12,066 INFO L225 Difference]: With dead ends: 102 [2019-11-16 00:40:12,066 INFO L226 Difference]: Without dead ends: 101 [2019-11-16 00:40:12,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-16 00:40:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-16 00:40:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-11-16 00:40:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-16 00:40:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-11-16 00:40:12,071 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-11-16 00:40:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:12,071 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-11-16 00:40:12,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-16 00:40:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-11-16 00:40:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-16 00:40:12,072 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:12,072 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-16 00:40:12,275 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:12,275 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:12,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:12,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-16 00:40:12,276 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:12,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37541761] [2019-11-16 00:40:12,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:12,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:12,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:12,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37541761] [2019-11-16 00:40:12,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114303511] [2019-11-16 00:40:12,547 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:12,610 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-16 00:40:12,611 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:40:12,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:40:12,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:12,805 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:12,805 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-16 00:40:12,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135735817] [2019-11-16 00:40:12,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-16 00:40:12,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-16 00:40:12,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-16 00:40:12,806 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-11-16 00:40:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:12,863 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-11-16 00:40:12,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-16 00:40:12,863 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-11-16 00:40:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:12,864 INFO L225 Difference]: With dead ends: 104 [2019-11-16 00:40:12,864 INFO L226 Difference]: Without dead ends: 103 [2019-11-16 00:40:12,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-16 00:40:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-16 00:40:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-16 00:40:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-16 00:40:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-11-16 00:40:12,868 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-11-16 00:40:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:12,868 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-11-16 00:40:12,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-16 00:40:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-11-16 00:40:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-16 00:40:12,869 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:12,869 INFO L380 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-11-16 00:40:13,072 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:13,072 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-11-16 00:40:13,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:13,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602561399] [2019-11-16 00:40:13,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:13,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:13,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:13,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602561399] [2019-11-16 00:40:13,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396105933] [2019-11-16 00:40:13,358 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:40:13,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-16 00:40:13,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:40:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:40:13,646 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:40:13,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-16 00:40:13,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827431013] [2019-11-16 00:40:13,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-16 00:40:13,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:40:13,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-16 00:40:13,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-16 00:40:13,647 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-11-16 00:40:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:40:13,735 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-11-16 00:40:13,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-16 00:40:13,735 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-11-16 00:40:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:40:13,736 INFO L225 Difference]: With dead ends: 107 [2019-11-16 00:40:13,736 INFO L226 Difference]: Without dead ends: 106 [2019-11-16 00:40:13,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-16 00:40:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-16 00:40:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-11-16 00:40:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-16 00:40:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-11-16 00:40:13,739 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-11-16 00:40:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:40:13,739 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-11-16 00:40:13,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-16 00:40:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-11-16 00:40:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-16 00:40:13,740 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:40:13,740 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-16 00:40:13,940 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:40:13,941 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:40:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:40:13,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-16 00:40:13,941 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:40:13,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513283123] [2019-11-16 00:40:13,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:13,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:40:13,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:40:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:40:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:40:13,986 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:40:13,987 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:40:14,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:40:14 BoogieIcfgContainer [2019-11-16 00:40:14,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:40:14,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:40:14,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:40:14,026 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:40:14,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:53" (3/4) ... [2019-11-16 00:40:14,029 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-16 00:40:14,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aac7ac3f-906f-4572-85df-e43df3823fdd/bin/uautomizer/witness.graphml [2019-11-16 00:40:14,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:40:14,097 INFO L168 Benchmark]: Toolchain (without parser) took 21346.26 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 230.7 MB). Free memory was 943.5 MB in the beginning and 924.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 249.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:40:14,097 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:40:14,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:40:14,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:40:14,098 INFO L168 Benchmark]: Boogie Preprocessor took 22.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:40:14,099 INFO L168 Benchmark]: RCFGBuilder took 221.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:40:14,099 INFO L168 Benchmark]: TraceAbstraction took 20693.12 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 116.9 MB). Free memory was 1.1 GB in the beginning and 934.8 MB in the end (delta: 157.5 MB). Peak memory consumption was 274.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:40:14,099 INFO L168 Benchmark]: Witness Printer took 68.57 ms. Allocated memory is still 1.3 GB. Free memory was 934.8 MB in the beginning and 924.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:40:14,101 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 221.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20693.12 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 116.9 MB). Free memory was 1.1 GB in the beginning and 934.8 MB in the end (delta: 157.5 MB). Peak memory consumption was 274.4 MB. Max. memory is 11.5 GB. * Witness Printer took 68.57 ms. Allocated memory is still 1.3 GB. Free memory was 934.8 MB in the beginning and 924.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 20.6s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...